MESON Chess Problem Database
Problem Display
PID: 6512 (1B1n4/7K/1p1qP3/1R1NkBN1/3rp1P1/1pR5/1Qb5/8 w - - 0 1)
Mansfield, Comins
Recomm., BCF 007. Ty., 1931-1932
#2
10 + 8
| 3550 | Complete Mansfield/II | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Qc7+
- 2.Bxc7#
- 1...Rd1
- 2.Rd3#
- 1...Rd2
- 2.Rd3#
- 1...Rd3
- 2.Rxd3#
- 1...Ra4
- 2.Rc4#
- 1...Rb4
- 2.Rc4#
- 1...Rc4
- 2.Rxc4#
- 1...Rxd5
- 2.Rf3#
- 1...Bb1
- 2.Qh2#
- 1...Bd1
- 2.Qh2#
- 1...Bd3
- 2.Qh2#
- 1...Sc6
- 2.Sf7#
- 1...Sxe6
- 2.Sf7#
- 1...Sb7
- 2.Sf7#
- 1...Sf7
- 2.Sxf7#
- 1...e3
- 2.Sf3#
- 1...Qc7+
- Tries
- 1.Kg6?
- 1...Rxd5
- 2.Rf3#
- 1...Sxe6
- 2.Sf7#
- 1...Qc7
- 2.Bxc7#
- 1...Rd1
- 2.Rd3#
- 1...Rd2
- 2.Rd3#
- 1...Rd3
- 2.Rxd3#
- 1...Ra4
- 2.Rc4#
- 1...Rb4
- 2.Rc4#
- 1...Rc4
- 2.Rxc4#
- 1...Bb1
- 2.Qh2#
- 1...Bd1
- 2.Qh2#
- 1...Bd3
- 2.Qh2#
- 1...Sc6
- 2.Sf7#
- 1...Sb7
- 2.Sf7#
- 1...Sf7
- 2.Sxf7#
- 1...e3
- 2.Sf3#
- 1...Qxb8!
- 1...Rxd5
- 1.Kh6?
- 1...Sf7+
- 2.Sxf7#
- 1...Rxd5
- 2.Rf3#
- 1...Sxe6
- 2.Sf7#
- 1...Qc7
- 2.Bxc7#
- 1...Rd1
- 2.Rd3#
- 1...Rd2
- 2.Rd3#
- 1...Rd3
- 2.Rxd3#
- 1...Ra4
- 2.Rc4#
- 1...Rb4
- 2.Rc4#
- 1...Rc4
- 2.Rxc4#
- 1...Bb1
- 2.Qh2#
- 1...Bd1
- 2.Qh2#
- 1...Bd3
- 2.Qh2#
- 1...Sc6
- 2.Sf7#
- 1...Sb7
- 2.Sf7#
- 1...e3
- 2.Sf3#
- 1...Qxb8!
- 1...Sf7+
- 1.Kg8?
- 1...Rxd5
- 2.Rf3#
- 1...Sxe6
- 2.Sf7#
- 1...Qc7
- 2.Bxc7#
- 1...Rd1
- 2.Rd3#
- 1...Rd2
- 2.Rd3#
- 1...Rd3
- 2.Rxd3#
- 1...Ra4
- 2.Rc4#
- 1...Rb4
- 2.Rc4#
- 1...Rc4
- 2.Rxc4#
- 1...Bb1
- 2.Qh2#
- 1...Bd1
- 2.Qh2#
- 1...Bd3
- 2.Qh2#
- 1...Sc6
- 2.Sf7#
- 1...Sb7
- 2.Sf7#
- 1...Sf7
- 2.Sxf7#
- 1...e3
- 2.Sf3#
- 1...Qxb8!
- 1...Rxd5
- 1.Kh8?
- 1...Sf7+
- 2.Sxf7#
- 1...Rxd5
- 2.Rf3#
- 1...Sxe6
- 2.Sf7#
- 1...Qc7
- 2.Bxc7#
- 1...Rd1
- 2.Rd3#
- 1...Rd2
- 2.Rd3#
- 1...Rd3
- 2.Rxd3#
- 1...Ra4
- 2.Rc4#
- 1...Rb4
- 2.Rc4#
- 1...Rc4
- 2.Rxc4#
- 1...Bb1
- 2.Qh2#
- 1...Bd1
- 2.Qh2#
- 1...Bd3
- 2.Qh2#
- 1...Sc6
- 2.Sf7#
- 1...Sb7
- 2.Sf7#
- 1...e3
- 2.Sf3#
- 1...Qxb8!
- 1...Sf7+
- 1.Sb4+?
- 1...Kf4
- 2.Sh3#
- 1...Rd5
- 2.Rf3#
- 1...Kf6!
- 1...Kf4
- 1.Sf4+?
- 1...Kxf4
- 2.Sh3#
- 1...Rd5
- 2.Rf3#
- 1...Kf6!
- 1...Kxf4
- 1.Sxb6+?
- 1...Kf4
- 2.Sh3#
- 1...Rd5
- 2.Rf3#
- 1...Kf6!
- 1...Kf4
- 1.Sf6+?
- 1...Kf4
- 2.Sh3#
- 1...Rd5
- 2.Rf3#
- 1...Kxf6!
- 1...Kf4
- 1.Se7+?
- 1...Kf4
- 2.Sh3#
- 1...Rd5
- 2.Rf3#
- 1...Kf6!
- 1...Kf4
- 1.Bc7?
- 1...Rxd5
- 2.Rf3#
- 1...Sxe6
- 2.Sf7#
- 1...Rd1
- 2.Rd3#
- 1...Rd2
- 2.Rd3#
- 1...Rd3
- 2.Rxd3#
- 1...Ra4
- 2.Rc4#
- 1...Rb4
- 2.Rc4#
- 1...Rc4
- 2.Rxc4#
- 1...Bb1
- 2.Qh2#
- 1...Bd1
- 2.Qh2#
- 1...Bd3
- 2.Qh2#
- 1...Sc6
- 2.Sf7#
- 1...Sb7
- 2.Sf7#
- 1...Sf7
- 2.Sxf7#
- 1...e3
- 2.Sf3#
- 1...Qxc7+!
- 1...Rxd5
- 1.Rcxb3?
- 1...Qc7+
- 2.Bxc7#
- 1...Bxb3
- 2.Qh2#
- 1...Sxe6
- 2.Sf7#
- 1...Bb1
- 2.Qh2#
- 1...Bd1
- 2.Qh2#
- 1...Bd3
- 2.Qh2#
- 1...Sc6
- 2.Sf7#
- 1...Sb7
- 2.Sf7#
- 1...Sf7
- 2.Sxf7#
- 1...e3
- 2.Sf3#
- 1...Qxb8!
- 1...Qc7+
- 1.Rd3?
- threat
- 2.Qxd4#
- 1...Qc7+
- 2.Bxc7#
- 1...Bxd3
- 2.Qh2#
- 1...Sxe6
- 2.Sf7#
- 1...exd3
- 2.Sf3#
- 1...Sc6
- 2.Sf7#
- 1...Qxb8!
- threat
- 1.Re3?
- threat
- 2.Sf3#
- 1...Qc7+
- 2.Bxc7#
- 1...Bd1
- 2.Rxe4#
- 2.Qh2#
- 1...Qxb8!
- threat
- 1.Rh3?
- 1...Qc7+
- 2.Bxc7#
- 1...Sxe6
- 2.Sf7#
- 1...Bb1
- 2.Qh2#
- 1...Bd1
- 2.Qh2#
- 1...Bd3
- 2.Qh2#
- 1...Sc6
- 2.Sf7#
- 1...Sb7
- 2.Sf7#
- 1...Sf7
- 2.Sxf7#
- 1...e3
- 2.Sf3#
- 1...Qxb8!
- 1...Qc7+
- 1.Rc4?
- threat
- 2.Qxd4#
- 1...Qc7+
- 2.Bxc7#
- 1...Sxe6
- 2.Sf7#
- 1...Sc6
- 2.Sf7#
- 1...Qxb8!
- threat
- 1.Rc6?
- threat
- 2.Bxd6#
- 1...Qc7+
- 2.Bxc7#
- 1...Sxc6
- 2.Sf7#
- 1...Sb7
- 2.Sf7#
- 1...Sf7
- 2.Sxf7#
- 1...Qxb8!
- threat
- 1.Rc8?
- 1...Qc7+
- 2.Bxc7#
- 1...Sxe6
- 2.Sf7#
- 1...Bb1
- 2.Qh2#
- 1...Bd1
- 2.Qh2#
- 1...Bd3
- 2.Qh2#
- 1...Sc6
- 2.Sf7#
- 1...Sb7
- 2.Sf7#
- 1...Sf7
- 2.Sxf7#
- 1...e3
- 2.Sf3#
- 1...Qxb8!
- 1...Qc7+
- 1.e7?
- 1...Rxd5
- 2.Rf3#
- 1...Qc7
- 2.Bxc7#
- 1...Rd1
- 2.Rd3#
- 1...Rd2
- 2.Rd3#
- 1...Rd3
- 2.Rxd3#
- 1...Ra4
- 2.Rc4#
- 1...Rb4
- 2.Rc4#
- 1...Rc4
- 2.Rxc4#
- 1...Bb1
- 2.Qh2#
- 1...Bd1
- 2.Qh2#
- 1...Bd3
- 2.Qh2#
- 1...Sc6
- 2.Sf7#
- 1...Se6
- 2.Sf7#
- 1...Sb7
- 2.Sf7#
- 2.e8Q#
- 2.e8R#
- 1...Sf7
- 2.Sxf7#
- 2.e8Q#
- 2.e8R#
- 1...e3
- 2.Sf3#
- 1...Qxb8!
- 1...Rxd5
- 1.Kg6?
- Keys
- 1.Rc7!
- 1...Qxc7+
- 2.Bxc7#
- 1...Qe7+
- 2.Rxe7#
- 1...Qd7+
- 2.Rxd7#
- 1...Qxd5
- 2.Rf7#
- 1...Qxe6
- 2.Re7#
- 1...Sxe6
- 2.Sf7#
- 1...Qa3
- 2.Rcc5#
- 1...Qb4
- 2.Rcc5#
- 1...Qc5
- 2.Rcxc5#
- 1...Qf8
- 2.Re7#
- 1...Qc6
- 2.Rxc6#
- 1...Bb1
- 2.Qh2#
- 1...Bd1
- 2.Qh2#
- 1...Bd3
- 2.Qh2#
- 1...Sc6
- 2.Sf7#
- 1...Sb7
- 2.Sf7#
- 1...Sf7
- 2.Sxf7#
- 1...e3
- 2.Sf3#
- 1...Qxc7+
- 1.Rc7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 7
- Sets
- Q(g);CHECK,OGATEB::B(J),XQ(g)
- R(c);OGATEB::QAB(A)+R(B)
- R(c);OGATEB::QAB(A)+R(B),XR(c)
- R(c);OGATEB,P_SPINR(c),XS(E)::QAB(A)+R(B)
- B(a);OGATE::QAB(A)
- S(h);N_GUARD::S(G)
- S(h);N_GUARD,XP(H)::S(G)
- S(h);N_GUARD::S(G),XS(h)
- P(d);N_GUARD,P_PINB(F)::S(G)
- Tries
- Try
- K(I);P_SPINP(H),S_FLIGHT
- Vars
- R(c);OGATEB,P_SPINR(c),XS(E)::QAB(A)+R(B)
- S(h);N_GUARD,XP(H)::S(G)
- Q(g);N_PINP(H),OGATEB::B(J),XQ(g)
- R(c);OGATEB::QAB(A)+R(B)
- R(c);OGATEB::QAB(A)+R(B),XR(c)
- B(a);OGATE::QAB(A)
- S(h);N_GUARD::S(G)
- S(h);N_GUARD::S(G),XS(h)
- P(d);N_GUARD,P_PINB(F)::S(G)
- Refutation
- Q(g);N_PINP(H),N_SPINQ(g),XB(J)
- Try
- K(I);P-FLIGHT,P_SPINP(H)
- Vars
- S(h);CHECK,N_GUARD::S(G),XS(h)
- R(c);OGATEB,P_SPINR(c),XS(E)::QAB(A)+R(B)
- S(h);N_GUARD,XP(H)::S(G)
- Q(g);N_PINP(H),OGATEB::B(J),XQ(g)
- R(c);OGATEB::QAB(A)+R(B)
- R(c);OGATEB::QAB(A)+R(B),XR(c)
- B(a);OGATE::QAB(A)
- S(h);N_GUARD::S(G)
- P(d);N_GUARD::S(G)
- Refutation
- Q(g);N_PINP(H),N_SPINQ(g),XB(J)
- Try
- K(I);S_FLIGHT
- Vars
- R(c);OGATEB,P_SPINR(c),XS(E)::QAB(A)+R(B)
- S(h);N_GUARD,XP(H)::S(G)
- Q(g);OGATEB::B(J),XQ(g)
- R(c);OGATEB::QAB(A)+R(B)
- R(c);OGATEB::QAB(A)+R(B),XR(c)
- B(a);OGATE::QAB(A)
- S(h);N_GUARD::S(G)
- S(h);N_GUARD::S(G),XS(h)
- P(d);N_GUARD::S(G)
- Refutation
- Q(g);N_SPINQ(g),XB(J)
- Try
- K(I);P-FLIGHT
- Vars
- S(h);CHECK,N_GUARD::S(G),XS(h)
- R(c);OGATEB,P_SPINR(c),XS(E)::QAB(A)+R(B)
- S(h);N_GUARD,XP(H)::S(G)
- Q(g);OGATEB::B(J),XQ(g)
- R(c);OGATEB::QAB(A)+R(B)
- R(c);OGATEB::QAB(A)+R(B),XR(c)
- B(a);OGATE::QAB(A)
- S(h);N_GUARD::S(G)
- P(d);N_GUARD::S(G)
- Refutation
- Q(g);N_SPINQ(g),XB(J)
- Try
- S(E);CHECK
- Vars
- K(e);S_FLIGHT::S(G)
- R(c);P_SPINR(c)::QAB(A)+R(B)
- Refutation
- K(e);N_SPINQ(g),S_FLIGHT
- Try
- S(E);CHECK
- Vars
- K(e);S_FLIGHT,XS(E)::S(G)
- R(c);P_SPINR(c)::QAB(A)+R(B)
- Refutation
- K(e);N_SPINQ(g),S_FLIGHT
- Try
- S(E);CHECK,XP(f)
- Vars
- K(e);S_FLIGHT::S(G)
- R(c);P_SPINR(c)::QAB(A)+R(B)
- Refutation
- K(e);N_SPINQ(g),S_FLIGHT
- Try
- S(E);CHECK
- Vars
- K(e);S_FLIGHT::S(G)
- R(c);P_SPINR(c)::QAB(A)+R(B)
- Refutation
- K(e);N_SPINQ(g),S_FLIGHT,XS(E)
- Try
- S(E);CHECK
- Vars
- K(e);S_FLIGHT::S(G)
- R(c);P_SPINR(c)::QAB(A)+R(B)
- Refutation
- K(e);N_SPINQ(g),S_FLIGHT
- Try
- B(J);
- Vars
- R(c);OGATEB,P_SPINR(c),XS(E)::QAB(A)+R(B)
- S(h);N_GUARD,XP(H)::S(G)
- R(c);OGATEB::QAB(A)+R(B)
- R(c);OGATEB::QAB(A)+R(B),XR(c)
- B(a);OGATE::QAB(A)
- S(h);N_GUARD::S(G)
- S(h);N_GUARD::S(G),XS(h)
- P(d);N_GUARD,P_PINB(F)::S(G)
- Refutation
- Q(g);CHECK,N_SPINQ(g),XB(J)
- Try
- R(B);P_PINR(c),XP(b)
- Vars
- Q(g);CHECK,OGATEB::B(J),XQ(g)
- B(a);OGATE,XR(B)::QAB(A)
- S(h);N_GUARD,XP(H)::S(G)
- B(a);OGATE::QAB(A)
- S(h);N_GUARD::S(G)
- S(h);N_GUARD::S(G),XS(h)
- P(d);N_GUARD,P_PINB(F)::S(G)
- Refutation
- Q(g);N_SPINQ(g),XB(J)
- Try
- R(B);P_PINR(c)
- Threat
- QAB1(A),XR(c)
- Vars
- Q(g);CHECK,OGATEB::B(J),XQ(g)
- B(a);OGATE,XR(B)::QAB(A)
- S(h);N_GUARD,XP(H)::S(G)
- P(d);N_GUARD,XR(B)::S(G)
- S(h);N_GUARD::S(G)
- Refutation
- Q(g);N_SPINQ(g),XB(J)
- Try
- R(B);P_PINP(d),P_PINR(c)
- Threat
- S(G)
- Vars
- Q(g);CHECK,OGATEB::B(J),XQ(g)
- Refutation
- Q(g);N_SPINQ(g),XB(J)
- Try
- R(B);P_PINR(c)
- Vars
- Q(g);CHECK,OGATEB::B(J),XQ(g)
- S(h);N_GUARD,XP(H)::S(G)
- B(a);OGATE::QAB(A)
- S(h);N_GUARD::S(G)
- S(h);N_GUARD::S(G),XS(h)
- P(d);N_GUARD,P_PINB(F)::S(G)
- Refutation
- Q(g);N_SPINQ(g),XB(J)
- Try
- R(B);P_PINR(c)
- Threat
- QAB1(A),XR(c)
- Vars
- Q(g);CHECK,OGATEB::B(J),XQ(g)
- S(h);N_GUARD,XP(H)::S(G)
- S(h);N_GUARD::S(G)
- Refutation
- Q(g);N_SPINQ(g),XB(J)
- Try
- R(B);P_PINR(c)
- Threat
- B(J),XQ(g)
- Vars
- Q(g);CHECK,OGATEB::B(J),XQ(g)
- S(h);N_GUARD,XR(B)::S(G)
- S(h);N_GUARD::S(G)
- S(h);N_GUARD::S(G),XS(h)
- Refutation
- Q(g);N_SPINQ(g),XB(J)
- Try
- R(B);P_PINR(c)
- Vars
- Q(g);CHECK,OGATEB::B(J),XQ(g)
- S(h);N_GUARD,XP(H)::S(G)
- B(a);OGATE::QAB(A)
- S(h);N_GUARD::S(G)
- S(h);N_GUARD::S(G),XS(h)
- P(d);N_GUARD,P_PINB(F)::S(G)
- Refutation
- Q(g);N_SPINQ(g),XB(J)
- Try
- P(H);
- Vars
- R(c);OGATEB,P_SPINR(c),XS(E)::QAB(A)+R(B)
- Q(g);OGATEB,P_PINP(H)::B(J),XQ(g)
- R(c);OGATEB::QAB(A)+R(B)
- R(c);OGATEB::QAB(A)+R(B),XR(c)
- B(a);OGATE::QAB(A)
- S(h);N_GUARD::S(G)
- P(d);N_GUARD,P_PINB(F)::S(G)
- Refutation
- Q(g);N_SPINQ(g),XB(J)
- Try
- Actual
- R(B);N_PINQ(g),P_PINR(c)
- Vars
- Q(g);CHECK,OGATE,P_SPINQ(g),XR(B)::B(J),XQ(g)
- Q(g);CHECK,OGATEB::B(J)+R(B),XQ(g)
- Q(g);OGATEB,P_SPINQ(g),XS(E)::B(J)+R(B)
- Q(g);OGATEB,XP(H)::B(J)+R(B)
- S(h);N_GUARD,XP(H)::S(G)
- Q(g);OGATEB::B(J)+R(B)
- Q(g);OGATEB::B(J)+R(B),XQ(g)
- B(a);OGATE::QAB(A)
- S(h);N_GUARD::S(G)
- S(h);N_GUARD::S(G),XS(h)
- P(d);N_GUARD,P_PINB(F)::S(G)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).