MESON Chess Problem Database
Problem Display
PID: 106926 (4R3/5pp1/4pkP1/4Nq2/1p5K/bB2QR2/1rP2P2/B7 w - - 0 1)
Summer, C L William
HM., Falkirk Herald, 1924
#2
10 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qxf3
- 2.Qg5#
- 1...Qf4+
- 2.Rxf4#
- 2.Qxf4#
- 1...Rb1
- 2.Qg5#
- 1...Ra2
- 2.Qg5#
- 1...Rxc2
- 2.Qg5#
- 1...Rxb3
- 2.Qg5#
- 1...fxg6
- 2.Rxe6#
- 1...Qxf3
- Tries
- 1.Bxb2?
- threat
- 2.Qg5#
- 1...Qf4+
- 2.Rxf4#
- 2.Qxf4#
- 1...Bxb2!
- threat
- 1.Ba2?
- 1...Qf4+
- 2.Rxf4#
- 2.Qxf4#
- 1...Qxf3
- 2.Qg5#
- 1...Rxa2
- 2.Qg5#
- 1...Rxc2
- 2.Qg5#
- 1...fxg6
- 2.Rxe6#
- 1...Rb1
- 2.Qg5#
- 1...Rb3
- 2.Qg5#
- 1...b3!
- 1...Qf4+
- 1.Bc4?
- 1...Qf4+
- 2.Rxf4#
- 2.Qxf4#
- 1...Qxf3
- 2.Qg5#
- 1...Rxc2
- 2.Qg5#
- 1...fxg6
- 2.Rxe6#
- 1...Rb1
- 2.Qg5#
- 1...Ra2
- 2.Qg5#
- 1...Rb3
- 2.Qg5#
- 1...b3!
- 1...Qf4+
- 1.Bd5?
- 1...Qf4+
- 2.Rxf4#
- 2.Qxf4#
- 1...Qxf3
- 2.Qg5#
- 1...Rxc2
- 2.Qg5#
- 1...exd5
- 2.Qg5#
- 2.Qb6#
- 1...fxg6
- 2.Rxe6#
- 1...Rb1
- 2.Qg5#
- 1...Ra2
- 2.Qg5#
- 1...Rb3
- 2.Qg5#
- 1...b3!
- 1...Qf4+
- 1.Bxe6?
- threat
- 2.Rxf5#
- 1...Qf4+
- 2.Rxf4#
- 2.Qxf4#
- 1...Qxf3
- 2.Qg5#
- 1...fxg6
- 2.Sg4#
- 2.Sd7#
- 1...fxe6!
- threat
- 1.Rxf5+?
- 1...exf5
- 2.Qg5#
- 2.Qb6#
- 1...Kxf5!
- 1...exf5
- 1.Qc1?
- 1...Qf4+
- 2.Qxf4#
- 1...Qxf3
- 2.Qg5#
- 1...Rxc2
- 2.Qg5#
- 1...Rxb3
- 2.Qg5#
- 1...fxg6
- 2.Rxe6#
- 1...Rb1
- 2.Qg5#
- 1...Ra2
- 2.Qg5#
- 1...Kxe5!
- 1...Qf4+
- 1.Qd2?
- 1...Qf4+
- 2.Qxf4#
- 1...Qxf3
- 2.Qg5#
- 1...Rxc2
- 2.Qg5#
- 2.Qd8#
- 1...Rxb3
- 2.Qg5#
- 2.Qd8#
- 1...fxg6
- 2.Rxe6#
- 1...Rb1
- 2.Qg5#
- 2.Qd8#
- 1...Ra2
- 2.Qg5#
- 2.Qd8#
- 1...Kxe5!
- 1...Qf4+
- 1.Qd4?
- 1...Qf4+
- 2.Rxf4#
- 2.Qxf4#
- 1...Rxc2
- 2.Qd8#
- 1...Rxb3
- 2.Qd8#
- 1...fxg6
- 2.Rxe6#
- 1...Rb1
- 2.Qd8#
- 1...Ra2
- 2.Qd8#
- 1...Qxf3!
- 1...Qf4+
- 1.Qf4?
- 1...Rxc2
- 2.Qg5#
- 1...Rxb3
- 2.Qg5#
- 1...fxg6
- 2.Rxe6#
- 1...Rb1
- 2.Qg5#
- 1...Ra2
- 2.Qg5#
- 1...Qxf4+!
- 1...Rxc2
- 1.Qc5?
- 1...Qf4+
- 2.Rxf4#
- 1...Rxc2
- 2.Qe7#
- 1...Rxb3
- 2.Qe7#
- 1...fxg6
- 2.Rxe6#
- 2.Rf8#
- 1...Rb1
- 2.Qe7#
- 1...Ra2
- 2.Qe7#
- 1...Qxf3!
- 1...Qf4+
- 1.gxf7?
- threat
- 2.Rxe6#
- 2.f8Q#
- 2.f8R#
- 1...Qf4+
- 2.Rxf4#
- 2.Qxf4#
- 1...Qxf3
- 2.Qg5#
- 2.f8Q#
- 2.f8R#
- 1...Rxc2
- 2.Rxe6#
- 2.Qg5#
- 2.f8Q#
- 2.f8R#
- 1...Rxb3
- 2.Qg5#
- 2.f8Q#
- 2.f8R#
- 1...g6
- 2.f8Q#
- 1...Rb1
- 2.Rxe6#
- 2.Qg5#
- 2.f8Q#
- 2.f8R#
- 1...Ra2
- 2.Rxe6#
- 2.Qg5#
- 2.f8Q#
- 2.f8R#
- 1...g5+!
- threat
- 1.Bxb2?
- Keys
- 1.Qd3!
- 1...Qf4+
- 2.Sg4#
- 1...Kxe5
- 2.Rxf5#
- 1...Qxf3
- 2.Sd7#
- 1...Rxc2
- 2.Qd8#
- 1...Rxb3
- 2.Qd8#
- 1...fxg6
- 2.Rxe6#
- 1...Rb1
- 2.Qd8#
- 1...Ra2
- 2.Qd8#
- 1...Qf4+
- 1.Qd3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 5
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- Q(d);N_SPINQ(d),XR(F)::QAB1(E)
- R(a);::QAB1(E)
- R(a);XP(B)::QAB1(E)
- R(a);XB(D)::QAB1(E)
- P(g);N_GUARD,XP(I)::R1(J),XP(e)
- Tries
- Try
- B(A);XR(a)
- Threat
- QAB1(E)
- Refutation
- B(b);XB(A)
- Try
- B(D);
- Vars
- Q(d);N_SPINQ(d),XR(F)::QAB1(E)
- R(a);XB(D)::QAB1(E)
- R(a);XP(B)::QAB1(E)
- P(g);N_GUARD,XP(I)::R1(J),XP(e)
- R(a);::QAB1(E)
- Refutation
- P(c);
- Try
- B(D);
- Vars
- Q(d);N_SPINQ(d),XR(F)::QAB1(E)
- R(a);XP(B)::QAB1(E)
- P(g);N_GUARD,XP(I)::R1(J),XP(e)
- R(a);::QAB1(E)
- Refutation
- P(c);
- Try
- B(D);
- Vars
- Q(d);N_SPINQ(d),XR(F)::QAB1(E)
- R(a);XP(B)::QAB1(E)
- P(g);N_GUARD,XP(I)::R1(J),XP(e)
- R(a);::QAB1(E)
- Refutation
- P(c);
- Try
- B(D);XP(e)
- Threat
- R1(F),XQ(d)
- Vars
- Q(d);N_SPINQ(d),XR(F)::QAB1(E)
- Refutation
- P(g);XB(D)
- Try
- R(F);CHECK,XQ(d)
- Refutation
- K(f);P-FLIGHT,XR(F)
- Try
- Q(E);
- Vars
- Q(d);CHECK,OGATEB::QAR2(E),XQ(d)
- Q(d);N_SPINQ(d),XR(F)::QAB1(E)
- R(a);XP(B)::QAB1(E)
- R(a);XB(D)::QAB1(E)
- P(g);N_GUARD,XP(I)::R1(J),XP(e)
- R(a);::QAB1(E)
- Refutation
- K(f);N_SPINQ(d),P_SPINP(e),P_SPINR(a),S_FLIGHT,XS(H)
- Try
- Q(E);
- Vars
- Q(d);CHECK,OGATEB::QAR2(E),XQ(d)
- Q(d);N_SPINQ(d),XR(F)::QAB1(E)
- P(g);N_GUARD,XP(I)::R1(J),XP(e)
- Refutation
- K(f);N_SPINQ(d),P_SPINP(e),P_SPINR(a),S_FLIGHT,XS(H)
- Try
- Q(E);
- Vars
- R(a);XP(B)::QAB(E)
- R(a);XB(D)::QAB(E)
- P(g);N_GUARD,XP(I)::R1(J),XP(e)
- R(a);::QAB(E)
- Refutation
- Q(d);N_SPINQ(d),XR(F)
- Try
- Q(E);
- Vars
- R(a);XP(B)::QAB1(E)
- R(a);XB(D)::QAB1(E)
- P(g);N_GUARD,XP(I)::R1(J),XP(e)
- R(a);::QAB1(E)
- Refutation
- Q(d);CHECK,XQ(E)
- Try
- Q(E);
- Vars
- Q(d);CHECK,OGATEB::R(F),XQ(d)
- R(a);XP(B)::QAB1(E)
- R(a);XB(D)::QAB1(E)
- R(a);::QAB1(E)
- Refutation
- Q(d);N_SPINQ(d),XR(F)
- Try
- P(I);XP(g)
- Threat
- DUALS(3)
- Vars
- P(h);::P=Q
- Refutation
- P(h);CHECK
- Try
- Actual
- Q(E);
- Vars
- Q(d);CHECK::S(H)
- K(f);N_SPINQ(d),P_SPINP(e),P_SPINR(a),S_FLIGHT,XS(H)::R1(F),XQ(d)
- Q(d);N_SPINQ(d),XR(F)::S(H)
- R(a);XP(B)::QAB(E)
- R(a);XB(D)::QAB(E)
- P(g);N_GUARD,XP(I)::R1(J),XP(e)
- R(a);::QAB(E)
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).