MESON Chess Problem Database
Problem Display
PID: 10210 (Q4R2/4n2B/2p3N1/2B1N1pK/2P1k1P1/2pr1qR1/2P2PP1/8 w - - 0 1)
Mansfield, Comins
To Mat, 1962
#2
13 + 7
| 3550 | Complete Mansfield/II | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Qxg2
- 2.cxd3#
- 1...Qxg4+
- 2.Rxg4#
- 1...Qxf2
- 2.cxd3#
- 1...Qf4
- 2.cxd3#
- 1...Qf5
- 2.cxd3#
- 1...Qf6
- 2.cxd3#
- 1...Qf7
- 2.cxd3#
- 1...Qxf8
- 2.cxd3#
- 1...Rd1
- 2.gxf3#
- 1...Rd2
- 2.gxf3#
- 1...Rd4
- 2.gxf3#
- 1...Rd5
- 2.gxf3#
- 1...Rd6
- 2.gxf3#
- 1...Rd7
- 2.gxf3#
- 1...Rd8
- 2.gxf3#
- 1...Qxg2
- Tries
- 1.Sxd3?
- threat
- 2.gxf3#
- 1...Qxg4+
- 2.Rxg4#
- 1...Qxg2
- 2.Sxe7#
- 2.Re3#
- 1...Qxf2
- 2.Sxf2#
- 1...Qxd3
- 2.cxd3#
- 1...Qxg3
- 2.Sxe7#
- 1...Qxf8
- 2.Re3#
- 1...Qd1
- 2.Sxe7#
- 2.Re3#
- 1...Qe2
- 2.Sxe7#
- 1...Qe3
- 2.Sxe7#
- 2.Rxe3#
- 1...Qf5
- 2.Re3#
- 1...Qf6
- 2.Re3#
- 1...Qf7
- 2.Re3#
- 1...Qf4!
- threat
- 1.Sxf3?
- threat
- 2.Sxg5#
- 2.Sxe7#
- 1...Rxf3
- 2.gxf3#
- 1...Sxg6
- 2.Bxg6#
- 2.Qe8#
- 1...Rd6
- 2.Sxg5#
- 1...Sd5
- 2.Sxg5#
- 2.Sf4#
- 2.Sgh4#
- 2.Sge5#
- 2.Se7#
- 2.Sh8#
- 1...Sf5
- 2.Sxg5#
- 1...Sc8
- 2.Sxg5#
- 2.Sf4#
- 2.Sgh4#
- 2.Sge5#
- 2.Se7#
- 2.Sh8#
- 1...Sg8
- 2.Sxg5#
- 2.Sf4#
- 2.Sgh4#
- 2.Sge5#
- 2.Se7#
- 2.Sh8#
- 1...Rd5!
- threat
- 1.Sd7?
- 1...Qxg4+
- 2.Rxg4#
- 1...Qxg2
- 2.Sxe7#
- 2.Sf6#
- 2.cxd3#
- 1...Qxf2
- 2.cxd3#
- 1...Qxg3
- 2.Sxe7#
- 2.Sf6#
- 1...Qxf8
- 2.cxd3#
- 1...Rxd7
- 2.gxf3#
- 1...Sxg6
- 2.Qe8#
- 1...Qd1
- 2.Sxe7#
- 2.Sf6#
- 1...Qe2
- 2.Sxe7#
- 2.Sf6#
- 1...Qe3
- 2.Sxe7#
- 2.Sf6#
- 1...Qf4
- 2.cxd3#
- 1...Qf5
- 2.cxd3#
- 1...Qf6
- 2.Sxf6#
- 2.cxd3#
- 1...Qf7
- 2.cxd3#
- 1...Rd1
- 2.gxf3#
- 1...Rd2
- 2.gxf3#
- 1...Rd4
- 2.gxf3#
- 1...Rd5
- 2.gxf3#
- 1...Rd6
- 2.gxf3#
- 1...Sd5
- 2.Sf4#
- 1...Sf5
- 2.Sf6#
- 1...Sc8
- 2.Sf4#
- 1...Sg8
- 2.Sf4#
- 1...Re3!
- 1...Qxg4+
- 1.Rgxf3?
- threat
- 2.cxd3#
- 1...Rxf3
- 2.gxf3#
- 1...Rd1
- 2.Re3#
- 1...Rd2
- 2.Re3#
- 1...Re3
- 2.Rxe3#
- 1...Rd4
- 2.Re3#
- 1...Rd5
- 2.Re3#
- 1...Rd6
- 2.Re3#
- 1...Rd7
- 2.Re3#
- 1...Rd8
- 2.Re3#
- 1...Sxg6!
- threat
- 1.Rfxf3?
- threat
- 2.cxd3#
- 1...Rxf3
- 2.gxf3#
- 1...Rd1
- 2.Re3#
- 1...Rd2
- 2.Re3#
- 1...Re3
- 2.Rxe3#
- 1...Rd4
- 2.Re3#
- 1...Rd5
- 2.Re3#
- 1...Rd6
- 2.Re3#
- 1...Rd7
- 2.Re3#
- 1...Rd8
- 2.Re3#
- 1...Sxg6!
- threat
- 1.Rf4+?
- 1...Qxf4
- 2.cxd3#
- 1...gxf4!
- 1...Qxf4
- 1.Sxd3?
- Keys
- 1.Sxc6!
- 1...Qxg4+
- 2.Rxg4#
- 1...Qxg2
- 2.Sgxe7#
- 2.cxd3#
- 1...Qxf2
- 2.cxd3#
- 1...Qxg3
- 2.Sgxe7#
- 1...Qxf8
- 2.cxd3#
- 1...Sxc6
- 2.Re8#
- 1...Sxg6
- 2.Qe8#
- 1...Qd1
- 2.Sgxe7#
- 1...Qe2
- 2.Sgxe7#
- 1...Qe3
- 2.Sgxe7#
- 1...Qf4
- 2.cxd3#
- 1...Qf5
- 2.cxd3#
- 1...Qf6
- 2.cxd3#
- 1...Qf7
- 2.cxd3#
- 1...Rd1
- 2.gxf3#
- 1...Rd2
- 2.gxf3#
- 1...Re3
- 2.Scxe7#
- 1...Rd4
- 2.gxf3#
- 1...Rd5
- 2.gxf3#
- 1...Rd6
- 2.gxf3#
- 1...Rd7
- 2.gxf3#
- 1...Rd8
- 2.gxf3#
- 1...Sd5
- 2.Sf4#
- 1...Sf5
- 2.Sd4#
- 1...Sc8
- 2.Sd4#
- 2.Sf4#
- 1...Sg8
- 2.Sd4#
- 2.Sf4#
- 1...Qxg4+
- 1.Sxc6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 1
- Sets
- Q(c);N_GUARD,N_PINP(F),XP(C)::P(A),XR(b)
- Q(c);CHECK,OGATE,XP(F)::R(D),XQ(c)
- Q(c);N_GUARD,N_PINP(F),XP(B)::P(A),XR(b)
- Q(c);N_GUARD,N_PINP(F)::P(A),XR(b)
- Q(c);N_GUARD,N_PINP(F),P_PINS(J)::P(A),XR(b)
- Q(c);N_GUARD,N_PINP(F),XR(M)::P(A),XR(b)
- R(b);N_GUARD::P(C),XQ(c)
- R(b);N_GUARD,N_SPINP(f)::P(C),XQ(c)
- Tries
- Try
- S(H);XR(b)
- Threat
- P(C),XQ(c)
- Vars
- Q(c);CHECK,OGATE,XP(F)::R(D),XQ(c)
- Q(c);N_PINP(F),XP(B)::S(H),XQ(c)
- Q(c);N_PINP(F),OGATE,XS(H)::P(A),XQ(c)
- Q(c);N_GUARD,N_PINP(F),XR(D)::B(K)+S(J),XS(g)
- Q(c);N_PINP(F),OGATE,XR(M)::R1(D)
- Q(c);N_GUARD::B(K)+S(J),XS(g)
- Q(c);N_PINP(F),OGATE::R1(D)
- Q(c);N_PINP(F),OGATE,P_PINS(J)::R1(D)
- Refutation
- Q(c);N_PINP(F)
- Try
- S(H);N_SPINP(F),XQ(c)
- Threat
- DUALS(2)
- Vars
- R(b);OGATE,XS(H)::P(C),XR(b)
- R(b);::S(H),XP(e)
- S(g);::S(H),XP(e)
- Refutation
- R(b);N_SPINP(f)
- Try
- S(H);
- Vars
- Q(c);CHECK,OGATE,XP(F)::R(D),XQ(c)
- Q(c);N_GUARD,N_PINP(F),XP(B)::P(A),XR(b)
- Q(c);N_GUARD,N_PINP(F),XR(M)::P(A),XR(b)
- R(b);N_GUARD,XS(H)::P(C),XQ(c)
- S(g);OGATEB,P_SPINS(g),XS(J)::QAR(L)
- Q(c);N_GUARD,N_PINP(F)::P(A),XR(b)
- Q(c);N_GUARD,N_PINP(F),P_PINS(J)::P(A),XR(b)
- R(b);N_GUARD::P(C),XQ(c)
- R(b);N_GUARD,N_SPINP(f)::P(C),XQ(c)
- S(g);N_GUARD,N_SPINP(f)::B(K)+S(J)
- S(g);S_CUTQ(c)::S(H)
- S(g);N_GUARD::B(K)+S(J)
- Refutation
- R(b);
- Try
- R(D);N_SPINP(F),XQ(c)
- Threat
- P(A),XR(b)
- Vars
- R(b);OGATE,XR(D)::P(C),XR(b)
- R(b);N_GUARD::R1(D)
- R(b);N_GUARD::R1(D),XR(b)
- R(b);N_GUARD,N_SPINP(f)::R1(D)
- Refutation
- S(g);P_SPINS(g),XS(J)
- Try
- R(M);N_SPINP(F),XQ(c)
- Threat
- P(A),XR(b)
- Vars
- R(b);OGATE,XR(M)::P(C),XR(b)
- R(b);N_GUARD::R1(M)
- R(b);N_GUARD::R1(M),XR(b)
- R(b);N_GUARD,N_SPINP(f)::R1(M)
- Refutation
- S(g);P_SPINS(g),XS(J)
- Try
- R(M);CHECK
- Vars
- Q(c);N_PINP(F),XR(M)::P(A),XR(b)
- Refutation
- P(e);XR(M)
- Try
- Actual
- S(H);XP(f)
- Vars
- Q(c);CHECK,OGATE,XP(F)::R(D),XQ(c)
- Q(c);N_GUARD,N_PINP(F),XP(B)::P(A),XR(b)
- Q(c);N_GUARD,N_PINP(F),XR(D)::B(K)+S(J),XS(g)
- Q(c);N_GUARD,N_PINP(F),XR(M)::P(A),XR(b)
- S(g);OGATEB,P_SPINS(g),XS(H)::R(M)
- S(g);OGATEB,P_SPINS(g),XS(J)::QAR(L)
- Q(c);N_GUARD::B(K)+S(J),XS(g)
- Q(c);N_GUARD,N_PINP(F)::B(K)+S(J),XS(g)
- Q(c);N_GUARD,N_PINP(F)::P(A),XR(b)
- Q(c);N_GUARD,N_PINP(F),P_PINS(J)::P(A),XR(b)
- R(b);N_GUARD::P(C),XQ(c)
- R(b);N_GUARD::QAB(L)+S(H),XS(g)
- S(g);N_GUARD::B(K)+S(J)
- S(g);N_GUARD::QAB(L)+S(H)
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).