MESON Chess Problem Database
Problem Display
PID: 11539 (5n1B/3p1Q2/6B1/4n2K/1P1k4/2b2R2/2PNq1N1/1r2R3 w - - 0 1)
Wynne, Frank Wilson
Chess, 1939
#2
10 + 7
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Bxe5#
- 2.Re4#
- 2.Qc4#
- 1...Qf1
- 2.Bxe5#
- 2.Re4#
- 1...Qd3
- 2.Bxe5#
- 2.Rxd3#
- 1...Qxf3+
- 2.Sxf3#
- 1...Qc4
- 2.Bxe5#
- 2.Re4#
- 2.Rf4#
- 2.Qxc4#
- 1...Qb5
- 2.Re4#
- 2.Rf4#
- 1...Qa6
- 2.Bxe5#
- 2.Re4#
- 2.Rf4#
- 1...Qxe1
- 2.Rd3#
- 2.Qc4#
- 1...Qxd2
- 2.Bxe5#
- 2.Re4#
- 1...Qf2
- 2.Bxe5#
- 2.Re4#
- 2.Rd3#
- 2.Qc4#
- 1...Qxg2
- 2.Bxe5#
- 2.Re4#
- 2.Rd3#
- 2.Qc4#
- 1...Qe3
- 2.Qc4#
- 1...Qe4
- 2.Rxe4#
- 2.Qc4#
- 1...Ra1
- 2.Sb3#
- 1...Rc1
- 2.Sb3#
- 1...Rd1
- 2.Sb3#
- 1...Rxe1
- 2.Sb3#
- 1...Rb3
- 2.Sxb3#
- 1...Bb2
- 2.Sb3#
- 1...Se6
- 2.Qxd7#
- 1...Sxg6
- 2.Qxd7#
- 1...Sh7
- 2.Qxd7#
- 1...d5
- 2.Qa7#
- 1...Qd1
- Tries
- 1.Sf4?
- threat
- 2.Sxe2#
- 2.Qd5#
- 1...Qxf3+
- 2.Sxf3#
- 1...Qxe1
- 2.Rd3#
- 2.Qc4#
- 2.Qd5#
- 1...Qxd2
- 2.Bxe5#
- 2.Re4#
- 2.Qd5#
- 1...Rxe1
- 2.Sb3#
- 2.Qd5#
- 1...Rxb4
- 2.Qd5#
- 1...Bxb4
- 2.Qd5#
- 1...Qd1
- 2.Bxe5#
- 2.Re4#
- 2.Qc4#
- 2.Qd5#
- 1...Qf1
- 2.Bxe5#
- 2.Re4#
- 2.Qd5#
- 1...Qd3
- 2.Bxe5#
- 2.Rxd3#
- 2.Qd5#
- 1...Qc4
- 2.Bxe5#
- 2.Re4#
- 2.Qxc4#
- 1...Qb5
- 2.Re4#
- 1...Qa6
- 2.Bxe5#
- 2.Re4#
- 2.Qd5#
- 1...Qf2
- 2.Bxe5#
- 2.Re4#
- 2.Rd3#
- 2.Qc4#
- 2.Qd5#
- 1...Qg2
- 2.Bxe5#
- 2.Re4#
- 2.Rd3#
- 2.Qc4#
- 2.Qd5#
- 1...Qe3
- 2.Qc4#
- 2.Qd5#
- 1...Qe4
- 2.Rxe4#
- 2.Qc4#
- 1...Se6
- 2.Qxd7#
- 1...d5
- 2.Sxe2#
- 2.Qxd5#
- 2.Qa7#
- 1...Qh2+!
- threat
- 1.Bd3?
- threat
- 2.Qc4#
- 1...Qxf3+
- 2.Sxf3#
- 1...Qxd3
- 2.Bxe5#
- 2.Rxd3#
- 1...Se6
- 2.Qxd7#
- 1...d5
- 2.Qa7#
- 1...Rxb4!
- threat
- 1.Be4?
- threat
- 2.Qd5#
- 1...Qxf3+
- 2.Sxf3#
- 1...Qxe4
- 2.Rxe4#
- 2.Qc4#
- 1...Qc4
- 2.Qxc4#
- 1...Se6
- 2.Qxd7#
- 1...d5
- 2.Qxd5#
- 2.Qa7#
- 1...Qb5!
- threat
- 1.Qf4+?
- 1...Qe4
- 2.Rd3#
- 2.Qxe4#
- 1...Kd5!
- 1...Qe4
- 1.Sf4?
- Keys
- 1.Rd1!
- threat
- 2.Sb3#
- 1...Qxf3+
- 2.Sxf3#
- 1...Qxd1
- 2.Qc4#
- 1...Qxd2
- 2.Rf4#
- 1...Bxd2
- 2.c3#
- 1...Sxg6
- 2.Qxd7#
- 1...Se6
- 2.Qxd7#
- 1...Qd3
- 2.Rxd3#
- 1...Rb3
- 2.Sxb3#
- 1...d5
- 2.Qa7#
- threat
- 1.Rd1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 7
- Sets
- Q(b);CHECK,XR(E)::S(C),XQ(b)
- Q(b);N_GUARD,N_PINR(E)::QAR1(I)
- R(a);N_GUARD::S(C)
- R(a);N_GUARD,XR(A)::S(C)
- R(a);N_GUARD::S(C),XR(a)
- B(c);S_CUTR(a)::S(C)
- S(g);N_GUARD::QAR(I),XP(f)
- S(g);N_GUARD,XB(H)::QAR(I),XP(f)
- P(f);OGATE,SBLOCK::QAB(I)
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK,XR(E)::S(C),XQ(b)
- R(a);XP(F)::QAR1(I)
- B(c);XP(F)::QAR1(I)
- Q(b);N_PINR(E),OGATE::R1(A)
- S(g);N_GUARD::QAR(I),XP(f)
- Refutation
- Q(b);CHECK,N_PINR(E)
- Try
- B(H);
- Threat
- QAR1(I)
- Vars
- Q(b);CHECK,XR(E)::S(C),XQ(b)
- S(g);N_GUARD::QAR(I),XP(f)
- P(f);OGATE,SBLOCK::QAB(I)
- Refutation
- R(a);XP(F)
- Try
- B(H);
- Threat
- QAR1(I)
- Vars
- Q(b);CHECK,XR(E)::S(C),XQ(b)
- Q(b);N_GUARD,N_PINR(E)::QAR1(I),XQ(b)
- S(g);N_GUARD::QAR(I),XP(f)
- Refutation
- Q(b);N_PINR(E)
- Try
- Q(I);CHECK
- Refutation
- K(d);N_SPINS(e),P-FLIGHT
- Try
- Actual
- R(A);
- Threat
- R(A)+S(C),DCHECK
- Vars
- Q(b);CHECK,XR(E)::R(A)+S(C),DCHECK,XQ(b)
- Q(b);N_GUARD,XR(A)::QAR1(I)
- Q(b);N_PINR(E),P_SPINQ(b),XS(C)::R(E)
- B(c);OGATE,P_SPINB(c),XS(C)::P(B)
- S(g);N_GUARD,XB(H)::QAR(I),XP(f)
- S(g);N_GUARD::QAR(I),XP(f)
- Q(b);N_PINR(E)::R1(E),XQ(b)
- R(a);::R(A)+S(C),DCHECK,XR(a)
- P(f);OGATE,SBLOCK::QAB(I)
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).