MESON Chess Problem Database
Problem Display
PID: 17521 (K1N5/P1pP4/2B2pP1/3rpk1P/2Q1RP1R/4P3/2N5/8 w - - 0 1)
Whyatt, William Albert
Melbourne Leader, 1947
#2
13 + 5
SOLUTION
- SOUND
- Sets
- 1...Ke6
- 2.Sd4#
- 1...Rd1
- 2.Se7#
- 1...Rd2
- 2.Se7#
- 1...Rd3
- 2.Se7#
- 1...Rd4
- 2.Se7#
- 1...Ra5
- 2.Se7#
- 1...Rb5
- 2.Se7#
- 1...Rc5
- 2.Se7#
- 1...Rd6
- 2.Se7#
- 1...Rxd7
- 2.Bxd7#
- 1...exf4
- 2.Qxd5#
- 1...Ke6
- Tries
- 1.Kb7?
- 1...Ke6
- 2.Sd4#
- 1...Rxd7
- 2.Bxd7#
- 1...exf4
- 2.Qxd5#
- 1...Rd1
- 2.Se7#
- 1...Rd2
- 2.Se7#
- 1...Rd3
- 2.Se7#
- 1...Rd4
- 2.Se7#
- 1...Ra5
- 2.Se7#
- 1...Rc5
- 2.Se7#
- 1...Rd6
- 2.Se7#
- 1...Rb5+!
- 1...Ke6
- 1.Kb8?
- 1...Ke6
- 2.Sd4#
- 1...Rxd7
- 2.Bxd7#
- 1...exf4
- 2.Qxd5#
- 1...Rd1
- 2.Se7#
- 1...Rd2
- 2.Se7#
- 1...Rd3
- 2.Se7#
- 1...Rd4
- 2.Se7#
- 1...Ra5
- 2.Se7#
- 1...Rc5
- 2.Se7#
- 1...Rd6
- 2.Se7#
- 1...Rb5+!
- 1...Ke6
- 1.Sa1?
- 1...Rxd7
- 2.Bxd7#
- 1...exf4
- 2.Qxd5#
- 1...Rd1
- 2.Se7#
- 1...Rd2
- 2.Se7#
- 1...Rd3
- 2.Se7#
- 1...Rd4
- 2.Se7#
- 1...Ra5
- 2.Se7#
- 1...Rb5
- 2.Se7#
- 1...Rc5
- 2.Se7#
- 1...Rd6
- 2.Se7#
- 1...Ke6!
- 1...Rxd7
- 1.Se1?
- 1...Rxd7
- 2.Bxd7#
- 1...exf4
- 2.Qxd5#
- 1...Rd1
- 2.Se7#
- 1...Rd2
- 2.Se7#
- 1...Rd3
- 2.Se7#
- 1...Rd4
- 2.Se7#
- 1...Ra5
- 2.Se7#
- 1...Rb5
- 2.Se7#
- 1...Rc5
- 2.Se7#
- 1...Rd6
- 2.Se7#
- 1...Ke6!
- 1...Rxd7
- 1.Sa3?
- 1...Rxd7
- 2.Bxd7#
- 1...exf4
- 2.Qxd5#
- 1...Rd1
- 2.Se7#
- 1...Rd2
- 2.Se7#
- 1...Rd3
- 2.Se7#
- 1...Rd4
- 2.Se7#
- 1...Ra5
- 2.Se7#
- 1...Rb5
- 2.Se7#
- 1...Rc5
- 2.Se7#
- 1...Rd6
- 2.Se7#
- 1...Ke6!
- 1...Rxd7
- 1.Sb4?
- 1...Rxd7
- 2.Bxd7#
- 1...exf4
- 2.Qxd5#
- 1...Rd1
- 2.Se7#
- 1...Rd2
- 2.Se7#
- 1...Rd3
- 2.Se7#
- 1...Rd4
- 2.Se7#
- 1...Ra5
- 2.Se7#
- 1...Rb5
- 2.Se7#
- 1...Rc5
- 2.Se7#
- 1...Rd6
- 2.Se7#
- 1...Ke6!
- 1...Rxd7
- 1.Sd4+?
- 1...Rxd4
- 2.Se7#
- 1...exd4
- 2.Qxd5#
- 1...Kxe4!
- 1...Rxd4
- 1.Rd4?
- 1...Rxd4
- 2.Se7#
- 1...Rxd7
- 2.Be4#
- 2.Bxd7#
- 2.e4#
- 1...exd4
- 2.Qxd5#
- 1...exf4
- 2.Qxd5#
- 1...Ra5
- 2.Se7#
- 2.Be4#
- 2.e4#
- 1...Rb5
- 2.Se7#
- 2.Be4#
- 2.e4#
- 1...Rc5
- 2.Se7#
- 2.Be4#
- 2.e4#
- 1...Rd6
- 2.Se7#
- 2.Be4#
- 2.e4#
- 1...e4
- 2.Qxd5#
- 1...Ke6!
- 1...Rxd4
- 1.Rxe5+?
- 1...Rxe5
- 2.Sd4#
- 1...fxe5!
- 1...Rxe5
- 1.g7?
- 1...Rxd7
- 2.Bxd7#
- 1...exf4
- 2.Qxd5#
- 1...Rd4
- 2.Se7#
- 1...Rd1
- 2.Se7#
- 1...Rd2
- 2.Se7#
- 1...Rd3
- 2.Se7#
- 1...Ra5
- 2.Se7#
- 1...Rb5
- 2.Se7#
- 1...Rc5
- 2.Se7#
- 1...Rd6
- 2.Se7#
- 1...Ke6!
- 1...Rxd7
- 1.d8Q?
- 1...Ke6
- 2.Sd4#
- 2.Bd7#
- 2.Qd7#
- 1...exf4
- 2.Qcxd5#
- 2.Qdxd5#
- 1...Rd4
- 2.Se7#
- 1...Rd1
- 2.Se7#
- 1...Rd2
- 2.Se7#
- 1...Rd3
- 2.Se7#
- 1...Ra5
- 2.Se7#
- 2.Bd7#
- 2.Qd7#
- 1...Rb5
- 2.Se7#
- 2.Bd7#
- 2.Qd7#
- 1...Rc5
- 2.Se7#
- 2.Bd7#
- 2.Qd7#
- 1...Rd6
- 2.Se7#
- 1...Rd7
- 2.Bxd7#
- 2.Qxd7#
- 1...Rxd8!
- 1...Ke6
- 1.d8S?
- threat
- 2.Se7#
- 1...exf4
- 2.Qxd5#
- 1...Rd7
- 2.Bxd7#
- 2.Qe6#
- 1...Rxd8!
- threat
- 1.d8B?
- 1...Ke6
- 2.Sd4#
- 1...exf4
- 2.Qxd5#
- 1...Rd4
- 2.Se7#
- 1...Rd1
- 2.Se7#
- 1...Rd2
- 2.Se7#
- 1...Rd3
- 2.Se7#
- 1...Ra5
- 2.Se7#
- 2.Bd7#
- 1...Rb5
- 2.Se7#
- 2.Bd7#
- 1...Rc5
- 2.Se7#
- 2.Bd7#
- 1...Rd6
- 2.Se7#
- 1...Rd7
- 2.Bxd7#
- 1...Rxd8!
- 1...Ke6
- 1.d8R?
- 1...Ke6
- 2.Sd4#
- 2.Bd7#
- 1...exf4
- 2.Rxd5#
- 2.Qxd5#
- 1...Rd4
- 2.Se7#
- 1...Rd1
- 2.Se7#
- 1...Rd2
- 2.Se7#
- 1...Rd3
- 2.Se7#
- 1...Ra5
- 2.Se7#
- 2.Bd7#
- 1...Rb5
- 2.Se7#
- 2.Bd7#
- 1...Rc5
- 2.Se7#
- 2.Bd7#
- 1...Rd6
- 2.Se7#
- 1...Rd7
- 2.Bxd7#
- 1...Rxd8!
- 1...Ke6
- 1.Kb7?
- Keys
- 1.Qf1!
- 1...Kxe4
- 2.f5#
- 1...Ke6
- 2.f5#
- 1...Rxd7
- 2.Qh3#
- 1...exf4
- 2.Qxf4#
- 1...Rd4
- 2.Qh3#
- 1...Rd1
- 2.Qh3#
- 1...Rd2
- 2.Qh3#
- 1...Rd3
- 2.Qh3#
- 1...Ra5
- 2.Qh3#
- 1...Rb5
- 2.Qh3#
- 1...Rc5
- 2.Qh3#
- 1...Rd6
- 2.Qh3#
- 1...Kxe4
- 1.Qf1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 11
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- K(c);P_SPINP(b),P_SPINR(a),S_FLIGHT::S(A)
- R(a);::S(M)
- R(a);P_PINP(J)::S(M)
- R(a);OGATE,XP(K)::B(H),XR(a)
- P(b);OGATEB,XP(E)::QAR2(C),XR(a)
- Tries
- Try
- K(L);S_FLIGHT
- Vars
- K(c);P_SPINP(b),P_SPINR(a),S_FLIGHT::S(A)
- R(a);OGATE,XP(K)::B(H),XR(a)
- P(b);OGATEB,XP(E)::QAR2(C),XR(a)
- R(a);::S(M)
- Refutation
- R(a);CHECK
- Try
- K(L);P-FLIGHT
- Vars
- K(c);P_SPINP(b),P_SPINR(a),S_FLIGHT::S(A)
- R(a);OGATE,XP(K)::B(H),XR(a)
- P(b);OGATEB,XP(E)::QAR2(C),XR(a)
- R(a);::S(M)
- Refutation
- R(a);CHECK
- Try
- S(A);
- Vars
- R(a);OGATE,XP(K)::B(H),XR(a)
- P(b);OGATEB,XP(E)::QAR2(C),XR(a)
- R(a);::S(M)
- R(a);P_PINP(J)::S(M)
- Refutation
- K(c);P_SPINP(b),P_SPINR(a),S_FLIGHT
- Try
- S(A);
- Vars
- R(a);OGATE,XP(K)::B(H),XR(a)
- P(b);OGATEB,XP(E)::QAR2(C),XR(a)
- R(a);::S(M)
- R(a);P_PINP(J)::S(M)
- Refutation
- K(c);P_SPINP(b),P_SPINR(a),S_FLIGHT
- Try
- S(A);
- Vars
- R(a);OGATE,XP(K)::B(H),XR(a)
- P(b);OGATEB,XP(E)::QAR2(C),XR(a)
- R(a);::S(M)
- R(a);P_PINP(J)::S(M)
- Refutation
- K(c);P_SPINP(b),P_SPINR(a),S_FLIGHT
- Try
- S(A);
- Vars
- R(a);OGATE,XP(K)::B(H),XR(a)
- P(b);OGATEB,XP(E)::QAR2(C),XR(a)
- R(a);::S(M)
- R(a);P_PINP(J)::S(M)
- Refutation
- K(c);P_SPINP(b),P_SPINR(a),S_FLIGHT
- Try
- S(A);CHECK
- Vars
- R(a);XS(A)::S(M)
- P(b);XS(A)::QAR2(C),XR(a)
- Refutation
- K(c);P_SPINR(a),S_FLIGHT,XR(D)
- Try
- R(D);
- Vars
- R(a);XR(D)::S(M)
- P(b);OGATEB,XR(D)::QAR2(C),XR(a)
- P(b);OGATEB,XP(E)::QAR2(C),XR(a)
- P(b);OGATEB::QAR2(C),XR(a)
- Refutation
- K(c);P_SPINR(a),S_FLIGHT
- Try
- R(D);CHECK,XP(b)
- Vars
- R(a);XR(D)::S(A)
- Refutation
- P(d);XR(D)
- Try
- P(I);
- Vars
- R(a);OGATE,XP(K)::B(H),XR(a)
- P(b);OGATEB,XP(E)::QAR2(C),XR(a)
- R(a);::S(M)
- R(a);P_PINP(J)::S(M)
- Refutation
- K(c);P_SPINP(b),P_SPINR(a),S_FLIGHT
- Try
- P(K);
- Vars
- R(a);::S(M)
- Refutation
- R(a);P_PINS(M),XQ(K)
- Try
- P(K);
- Threat
- S(M)
- Vars
- P(b);OGATEB,XP(E)::QAR2(C),XR(a)
- Refutation
- R(a);P_PINS(M),XS(K)
- Try
- P(K);
- Vars
- K(c);P_SPINP(b),P_SPINR(a),S_FLIGHT::S(A)
- P(b);OGATEB,XP(E)::QAR2(C),XR(a)
- R(a);::S(M)
- R(a);N_GUARD::B(H),XR(a)
- Refutation
- R(a);P_PINS(M),XB(K)
- Try
- P(K);
- Vars
- R(a);::S(M)
- R(a);N_GUARD::B(H),XR(a)
- Refutation
- R(a);P_PINS(M),XR(K)
- Try
- Actual
- Q(C);
- Vars
- K(c);OGATE,P_SPINR(a),S_FLIGHT,XR(D)::R(F)+P(E)
- K(c);OGATE,P_SPINP(b),S_FLIGHT::P(E)
- R(a);XP(K)::QAB(C)
- P(b);OGATE,P_SPINP(b),XP(E)::QAR1(C),XP(b)
- R(a);::QAB(C)
- R(a);P_PINP(J)::QAB(C)
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).