MESON Chess Problem Database
Problem Display
PID: 6804 (1Q6/3R4/2pN3p/Rn3PpP/1r1kB1K1/B1p5/2P2P2/8 w - - 0 1)
Stuart Green, G
Social Chess Quarterly (The), 1933
#2
11 + 7
SOLUTION
- SOUND
- Sets
- 1...Kc5
- 2.Qa7#
- 1...Ke5
- 2.Qh8#
- 1...Rb1
- 2.Qh8#
- 1...Rb2
- 2.Qh8#
- 1...Rb3
- 2.Qh8#
- 1...Ra4
- 2.Qh8#
- 1...Rc4
- 2.Qh8#
- 1...Sxa3
- 2.Qh8#
- 1...Sxd6
- 2.Qxb4#
- 1...Sa7
- 2.Qxb4#
- 2.Qh8#
- 1...Sc7
- 2.Qxb4#
- 2.Qh8#
- 1...c5
- 2.Qh8#
- 1...Kc5
- Tries
- 1.Kf3?
- 1...Kc5
- 2.Qa7#
- 1...Ke5
- 2.Se8#
- 2.Qh8#
- 1...Sxa3
- 2.Qh8#
- 1...Sxd6
- 2.Qxb4#
- 1...Rb1
- 2.Qh8#
- 1...Rb2
- 2.Qh8#
- 1...Rb3
- 2.Qh8#
- 1...Ra4
- 2.Qh8#
- 1...Rc4
- 2.Sxb5#
- 2.Qh8#
- 1...Sa7
- 2.Qxb4#
- 2.Qh8#
- 1...Sc7
- 2.Qxb4#
- 2.Qh8#
- 1...c5
- 2.Qh8#
- 1...g4+!
- 1...Kc5
- 1.Kg3?
- 1...Kc5
- 2.Qa7#
- 1...Ke5
- 2.Qh8#
- 1...Sxa3
- 2.Qh8#
- 1...Sxd6
- 2.Qxb4#
- 1...Rb1
- 2.Qh8#
- 1...Rb2
- 2.Qh8#
- 1...Rb3
- 2.Qh8#
- 1...Ra4
- 2.Qh8#
- 1...Rc4
- 2.Qh8#
- 1...Sa7
- 2.Qxb4#
- 2.Qh8#
- 1...Sc7
- 2.Qxb4#
- 2.Qh8#
- 1...c5
- 2.Qh8#
- 1...g4!
- 1...Kc5
- 1.Sb7+?
- 1...Kc4
- 2.Bd3#
- 2.Qg8#
- 1...Kxe4
- 2.Sc5#
- 2.Qe8#
- 1...Sd6!
- 1...Kc4
- 1.Bxb4?
- threat
- 2.Qh8#
- 1...Ke5
- 2.Bxc3#
- 2.Qh8#
- 1...Sxd6!
- threat
- 1.Bh1?
- 1...Ke5+
- 2.Se4#
- 1...Sxa3
- 2.Qh8#
- 1...Sxd6
- 2.Qxb4#
- 1...Rb1
- 2.Qh8#
- 1...Rb2
- 2.Qh8#
- 1...Rb3
- 2.Qh8#
- 1...Ra4
- 2.Qh8#
- 1...Rc4
- 2.Sxb5#
- 2.Qh8#
- 1...Sa7
- 2.Qxb4#
- 2.Qh8#
- 1...Sc7
- 2.Qxb4#
- 2.Qh8#
- 1...c5
- 2.Qh8#
- 1...Kc5+!
- 1...Ke5+
- 1.Bg2?
- 1...Ke5+
- 2.Se4#
- 1...Sxa3
- 2.Qh8#
- 1...Sxd6
- 2.Qxb4#
- 1...Rb1
- 2.Qh8#
- 1...Rb2
- 2.Qh8#
- 1...Rb3
- 2.Qh8#
- 1...Ra4
- 2.Qh8#
- 1...Rc4
- 2.Sxb5#
- 2.Qh8#
- 1...Sa7
- 2.Qxb4#
- 2.Qh8#
- 1...Sc7
- 2.Qxb4#
- 2.Qh8#
- 1...c5
- 2.Qh8#
- 1...Kc5+!
- 1...Ke5+
- 1.Bf3?
- 1...Ke5+
- 2.Se4#
- 1...Sxa3
- 2.Qh8#
- 1...Sxd6
- 2.Qxb4#
- 1...Rb1
- 2.Qh8#
- 1...Rb2
- 2.Qh8#
- 1...Rb3
- 2.Qh8#
- 1...Ra4
- 2.Qh8#
- 1...Rc4
- 2.Sxb5#
- 2.Qh8#
- 1...Sa7
- 2.Qxb4#
- 2.Qh8#
- 1...Sc7
- 2.Qxb4#
- 2.Qh8#
- 1...c5
- 2.Qh8#
- 1...Kc5+!
- 1...Ke5+
- 1.Bxc6?
- 1...Ke5+
- 2.Se4#
- 1...Sxa3
- 2.Rd5#
- 2.Qh8#
- 1...Sxd6
- 2.Qxb4#
- 1...Rb1
- 2.Qh8#
- 1...Rb2
- 2.Qh8#
- 1...Rb3
- 2.Qh8#
- 1...Ra4
- 2.Qh8#
- 1...Rc4
- 2.Sxb5#
- 2.Qh8#
- 1...Sa7
- 2.Rd5#
- 2.Qxb4#
- 2.Qh8#
- 1...Sc7
- 2.Qxb4#
- 2.Qh8#
- 1...Kc5+!
- 1...Ke5+
- 1.Qa8?
- 1...Kc5
- 2.Qa7#
- 1...Ke5
- 2.Qh8#
- 1...Sxa3
- 2.Qh8#
- 1...Rb1
- 2.Qh8#
- 1...Rb2
- 2.Qh8#
- 1...Rb3
- 2.Qh8#
- 1...Ra4
- 2.Qh8#
- 1...Rc4
- 2.Qh8#
- 1...Sa7
- 2.Qh8#
- 1...Sc7
- 2.Qh8#
- 1...c5
- 2.Qd5#
- 2.Qh8#
- 1...Sxd6!
- 1...Kc5
- 1.Kf3?
- Keys
- 1.Bd3!
- 1...Kc5+
- 2.Se4#
- 1...Kd5+
- 2.Se4#
- 1...Ke5+
- 2.Se4#
- 1...Sxa3
- 2.Sc4#
- 2.Se4#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Qh8#
- 1...Sxd6
- 2.Rxd6#
- 2.Qxd6#
- 2.Qxb4#
- 2.Qh8#
- 1...Rb1
- 2.Sxb5#
- 1...Rb2
- 2.Sxb5#
- 1...Rb3
- 2.Sxb5#
- 1...Ra4
- 2.Sxb5#
- 1...Rc4
- 2.Sxb5#
- 1...Sa7
- 2.Sc4#
- 2.Se4#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Qxb4#
- 2.Qh8#
- 1...Sc7
- 2.Qxb4#
- 2.Qh8#
- 1...c5
- 2.Sxb5#
- 1...Kc5+
- 1.Bd3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 8
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- K(c);P_PINB(D),P_SPINR(b),P_SPINS(d),S_FLIGHT::QAB(K)
- K(c);P_PINB(D),P_SPINS(d),S_FLIGHT::QAB(K)
- R(b);::QAB(K)
- S(d);XB(C)::QAB(K)
- S(d);OGATE,P_SPINS(d),XS(I)::QAR2(K),XR(b)
- P(f);SBLOCK::QAB(K)
- Tries
- Try
- K(E);S_FLIGHT
- Vars
- K(c);P_SPINR(b),P_SPINS(d),S_FLIGHT::QAB(K)
- S(d);XB(C)::QAB(K)
- S(d);OGATE,P_SPINS(d),XS(I)::QAR2(K),XR(b)
- R(b);::QAB(K)
- P(f);SBLOCK::QAB(K)
- Refutation
- P(e);CHECK
- Try
- K(E);P-FLIGHT
- Vars
- K(c);P_SPINR(b),P_SPINS(d),S_FLIGHT::QAB(K)
- K(c);P_SPINS(d),S_FLIGHT::QAB(K)
- S(d);XB(C)::QAB(K)
- S(d);OGATE,P_SPINS(d),XS(I)::QAR2(K),XR(b)
- R(b);::QAB(K)
- P(f);SBLOCK::QAB(K)
- Refutation
- P(e);
- Try
- S(I);CHECK
- Refutation
- S(d);P_SPINS(d)
- Try
- B(C);XR(b)
- Threat
- QAB(K)
- Refutation
- S(d);P_SPINS(d),XS(I)
- Try
- B(D);
- Vars
- K(c);CHECK,P_SPINS(d),S_FLIGHT::QAB(K)+S(I)
- S(d);XB(C)::QAB(K)
- S(d);OGATE,P_SPINS(d),XS(I)::QAR2(K),XR(b)
- R(b);::QAB(K)
- P(f);SBLOCK::QAB(K)
- Refutation
- K(c);CHECK,P_SPINR(b),P_SPINS(d),S_FLIGHT
- Try
- B(D);
- Vars
- K(c);CHECK,P_SPINS(d),S_FLIGHT::QAB(K)+S(I)
- S(d);XB(C)::QAB(K)
- S(d);OGATE,P_SPINS(d),XS(I)::QAR2(K),XR(b)
- R(b);::QAB(K)
- P(f);SBLOCK::QAB(K)
- Refutation
- K(c);CHECK,P_SPINR(b),P_SPINS(d),S_FLIGHT
- Try
- B(D);
- Vars
- K(c);CHECK,P_SPINS(d),S_FLIGHT::QAB(K)+S(I)
- S(d);XB(C)::QAB(K)
- S(d);OGATE,P_SPINS(d),XS(I)::QAR2(K),XR(b)
- R(b);::QAB(K)
- P(f);SBLOCK::QAB(K)
- Refutation
- K(c);CHECK,P_SPINR(b),P_SPINS(d),S_FLIGHT
- Try
- B(D);XP(f)
- Vars
- K(c);CHECK,P_SPINS(d),S_FLIGHT::QAB(K)+S(I)
- S(d);OGATE,P_SPINS(d),XS(I)::QAR2(K),XR(b)
- R(b);::QAB(K)
- Refutation
- K(c);CHECK,P_SPINR(b),P_SPINS(d),S_FLIGHT
- Try
- Q(K);
- Vars
- K(c);P_PINB(D),P_SPINR(b),P_SPINS(d),S_FLIGHT::QAB(K)
- K(c);P_PINB(D),P_SPINS(d),S_FLIGHT::QAB(K)
- S(d);XB(C)::QAB(K)
- R(b);::QAB(K)
- S(d);::QAB(K)
- Refutation
- S(d);P_SPINS(d),XS(I)
- Try
- Actual
- B(D);
- Vars
- K(c);CHECK,P_SPINR(b),P_SPINS(d),S_FLIGHT::S(I)
- K(c);CHECK,P-FLIGHT,P_SPINS(d)::R(J)+S(I)
- K(c);CHECK,P_SPINS(d),S_FLIGHT::QAB(K)+S(I)
- R(b);::R(J)+S(I),DCHECK,XS(d)
- P(f);SBLOCK::R(J)+S(I),DCHECK,XS(d)
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).