MESON Chess Problem Database
Problem Display
PID: 181108 (3n2Q1/3p1rB1/NR1p2P1/2Nk1pp1/R6p/1P3K2/7p/2n3bB w - - 0 1)
Kennard, Walter Irving
Checkmate, 1904
#2
10 + 11
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Bf2
- 2.Kxf2#
- 1...Be3
- 2.Kxe3#
- 1...Bd4
- 2.Rxd4#
- 1...Bxc5
- 2.Sc7#
- 1...Sa2
- 2.Ke2#
- 1...Se2
- 2.Kxe2#
- 1...Sxb3
- 2.Ke2#
- 1...Sd3
- 2.Ke2#
- 1...Sc6
- 2.Qxf7#
- 1...Se6
- 2.Qa8#
- 1...Sb7
- 2.Qxf7#
- 1...h3
- 2.Kg3#
- 1...g4+
- 2.Kf4#
- 1...dxc5
- 2.Sc7#
- 1...Bf2
- Tries
- 1.Kg2?
- threat
- 2.Kf1#
- 2.Kh3#
- 1...h3+
- 2.Kf1#
- 2.Kg3#
- 2.Kxh3#
- 1...Bxc5
- 2.Sc7#
- 1...g4
- 2.Kf1#
- 1...f4!
- threat
- 1.Bd4?
- threat
- 2.Sc7#
- 1...g4+
- 2.Kf4#
- 1...Se6
- 2.Qa8#
- 1...Bxd4!
- threat
- 1.Bf6?
- 1...g4+
- 2.Kf4#
- 1...Bxc5
- 2.Sc7#
- 1...Sxb3
- 2.Ke2#
- 1...dxc5
- 2.Sc7#
- 1...Bf2
- 2.Kxf2#
- 1...Be3
- 2.Kxe3#
- 1...Bd4
- 2.Rxd4#
- 1...Sa2
- 2.Ke2#
- 1...Se2
- 2.Kxe2#
- 1...Sd3
- 2.Ke2#
- 1...Sc6
- 2.Qxf7#
- 1...Se6
- 2.Qa8#
- 1...Sb7
- 2.Qxf7#
- 1...h3
- 2.Kg3#
- 1...f4!
- 1...g4+
- 1.Bh8?
- 1...g4+
- 2.Kf4#
- 1...Bxc5
- 2.Sc7#
- 1...Sxb3
- 2.Ke2#
- 1...dxc5
- 2.Sc7#
- 1...Bf2
- 2.Kxf2#
- 1...Be3
- 2.Kxe3#
- 1...Bd4
- 2.Rxd4#
- 1...Sa2
- 2.Ke2#
- 1...Se2
- 2.Kxe2#
- 1...Sd3
- 2.Ke2#
- 1...Sc6
- 2.Qxf7#
- 1...Se6
- 2.Qa8#
- 1...Sb7
- 2.Qxf7#
- 1...h3
- 2.Kg3#
- 1...f4!
- 1...g4+
- 1.Rab4?
- 1...g4+
- 2.Kf4#
- 1...Bxc5
- 2.Sc7#
- 1...Sxb3
- 2.Ke2#
- 1...dxc5
- 2.Sc7#
- 1...Bf2
- 2.Kxf2#
- 1...Be3
- 2.Kxe3#
- 1...Bd4
- 2.Rxd4#
- 1...Sa2
- 2.Ke2#
- 1...Se2
- 2.Kxe2#
- 1...Sd3
- 2.Ke2#
- 1...Sc6
- 2.Qxf7#
- 1...Se6
- 2.Qa8#
- 1...Sb7
- 2.Qxf7#
- 1...h3
- 2.Kg3#
- 1...f4!
- 1...g4+
- 1.Rc4?
- threat
- 2.Sb4#
- 2.Sc7#
- 1...g4+
- 2.Kf4#
- 1...Bxc5
- 2.Sc7#
- 1...dxc5
- 2.Sc7#
- 1...Sa2
- 2.Ke2#
- 2.Sc7#
- 1...Sd3
- 2.Ke2#
- 2.Sc7#
- 1...Sc6
- 2.Sc7#
- 2.Qxf7#
- 1...Se6
- 2.Sb4#
- 2.Qa8#
- 1...Sxb3!
- threat
- 1.Rf4?
- threat
- 2.Rxf5#
- 1...Bxc5
- 2.Sc7#
- 1...Sxb3
- 2.Ke2#
- 1...gxf4
- 2.Kxf4#
- 1...Bd4
- 2.Rxd4#
- 1...Sd3
- 2.Ke2#
- 1...Sc6
- 2.Qxf7#
- 1...Se6
- 2.Qa8#
- 1...g4+!
- threat
- 1.Rxh4?
- threat
- 2.Kg3#
- 1...Bxc5
- 2.Sc7#
- 1...gxh4
- 2.Kf4#
- 1...Bf2
- 2.Kxf2#
- 1...Se2
- 2.Kxe2#
- 1...f4!
- threat
- 1.Ra5?
- threat
- 2.Sb4#
- 2.Sc7#
- 1...g4+
- 2.Kf4#
- 1...Bxc5
- 2.Sc7#
- 1...Sa2
- 2.Ke2#
- 2.Sc7#
- 1...Sd3
- 2.Ke2#
- 2.Sc7#
- 1...Sc6
- 2.Sc7#
- 2.Qxf7#
- 1...Se6
- 2.Sb4#
- 2.Qa8#
- 1...Sxb3!
- threat
- 1.Qxf7+?
- 1...Se6
- 2.Qxf5#
- 1...Sxf7!
- 1...Se6
- 1.gxf7?
- 1...g4+
- 2.Kf4#
- 1...Bxc5
- 2.Sc7#
- 1...Sxb3
- 2.Ke2#
- 1...Sxf7
- 2.Qxf7#
- 2.Qa8#
- 1...dxc5
- 2.Sc7#
- 1...Bf2
- 2.Kxf2#
- 1...Be3
- 2.Kxe3#
- 1...Bd4
- 2.Rxd4#
- 1...Sa2
- 2.Ke2#
- 1...Se2
- 2.Kxe2#
- 1...Sd3
- 2.Ke2#
- 1...Sc6
- 2.f8Q#
- 2.f8S#
- 2.f8B#
- 2.f8R#
- 1...Se6
- 2.Qa8#
- 1...Sb7
- 2.f8Q#
- 2.f8S#
- 2.f8B#
- 2.f8R#
- 1...h3
- 2.Kg3#
- 1...f4!
- 1...g4+
- 1.Kg2?
- Keys
- 1.Rg4!
- 1...fxg4+
- 2.Kxg4#
- 1...Bxc5
- 2.Sc7#
- 1...Sxb3
- 2.Ke2#
- 1...dxc5
- 2.Sc7#
- 1...f4
- 2.Rxg5#
- 1...Bf2
- 2.Kxf2#
- 1...Be3
- 2.Kxe3#
- 1...Bd4
- 2.Rxd4#
- 1...Sa2
- 2.Ke2#
- 1...Se2
- 2.Kxe2#
- 1...Sd3
- 2.Ke2#
- 1...Sc6
- 2.Qxf7#
- 1...Se6
- 2.Qa8#
- 1...Sb7
- 2.Qxf7#
- 1...h3
- 2.Kg3#
- 1...fxg4+
- 1.Rg4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- B(b);::B(A)+K(C),XB(b)
- B(b);N_GUARD::R1(D),XB(b)
- B(b);SBLOCK,XS(E)::S(F)
- S(a);::B(A)+K(C)
- S(a);::B(A)+K(C),XS(a)
- S(a);XP(B)::B(A)+K(C)
- S(k);N_GUARD::QAB(J),XR(j)
- S(k);N_SPINR(j),OGATE::QAB(J)
- P(d);::B(A)+K(C)
- P(g);CHECK::B(A)+K(C)
- P(h);SBLOCK,XS(E)::S(F)
- Tries
- Try
- K(C);S_FLIGHT
- Threat
- DUALS(2)
- Vars
- B(b);SBLOCK,XS(E)::S(F)
- P(g);::B(A)+K(C)
- Refutation
- P(f);
- Try
- B(I);
- Threat
- S(F)
- Vars
- P(g);CHECK::B(A)+K(C)
- S(k);N_SPINR(j),OGATE::QAB(J)
- Refutation
- B(b);XB(I)
- Try
- B(I);
- Vars
- P(g);CHECK::B(A)+K(C)
- B(b);SBLOCK,XS(E)::S(F)
- S(a);XP(B)::B(A)+K(C)
- P(h);SBLOCK,XS(E)::S(F)
- B(b);::B(A)+K(C),XB(b)
- B(b);N_GUARD::R1(D),XB(b)
- S(a);::B(A)+K(C)
- S(a);::B(A)+K(C),XS(a)
- S(k);N_GUARD::QAB(J),XR(j)
- S(k);N_SPINR(j),OGATE::QAB(J)
- P(d);::B(A)+K(C)
- Refutation
- P(f);
- Try
- B(I);
- Vars
- P(g);CHECK::B(A)+K(C)
- B(b);SBLOCK,XS(E)::S(F)
- S(a);XP(B)::B(A)+K(C)
- P(h);SBLOCK,XS(E)::S(F)
- B(b);::B(A)+K(C),XB(b)
- B(b);N_GUARD::R1(D),XB(b)
- S(a);::B(A)+K(C)
- S(a);::B(A)+K(C),XS(a)
- S(k);N_GUARD::QAB(J),XR(j)
- S(k);N_SPINR(j),OGATE::QAB(J)
- P(d);::B(A)+K(C)
- Refutation
- P(f);
- Try
- R(D);
- Vars
- P(g);CHECK::B(A)+K(C)
- B(b);SBLOCK,XS(E)::S(F)
- S(a);XP(B)::B(A)+K(C)
- P(h);SBLOCK,XS(E)::S(F)
- B(b);::B(A)+K(C),XB(b)
- B(b);N_GUARD::R1(D),XB(b)
- S(a);::B(A)+K(C)
- S(a);::B(A)+K(C),XS(a)
- S(k);N_GUARD::QAB(J),XR(j)
- S(k);N_SPINR(j),OGATE::QAB(J)
- P(d);::B(A)+K(C)
- Refutation
- P(f);
- Try
- R(D);
- Threat
- DUALS(2)
- Vars
- P(g);CHECK::B(A)+K(C)
- B(b);XS(E)::S(F)
- P(h);XS(E)::S(F)
- Refutation
- S(a);XP(B)
- Try
- R(D);
- Threat
- R(D),XP(f)
- Vars
- B(b);SBLOCK,XS(E)::S(F)
- S(a);XP(B)::B(A)+K(C)
- P(g);XR(D)::B(A)+K(C),XP(g)
- B(b);N_GUARD::R1(D),XB(b)
- S(a);::B(A)+K(C)
- S(k);N_GUARD::QAB(J),XR(j)
- S(k);N_SPINR(j),OGATE::QAB(J)
- Refutation
- P(g);CHECK
- Try
- R(D);XP(d)
- Threat
- B(A)+K(C)
- Vars
- B(b);SBLOCK,XS(E)::S(F)
- P(g);XR(D)::B(A)+K(C)
- B(b);::B(A)+K(C),XB(b)
- S(a);::B(A)+K(C),XS(a)
- Refutation
- P(f);
- Try
- R(D);
- Threat
- DUALS(2)
- Vars
- P(g);CHECK::B(A)+K(C)
- B(b);P_SPINB(b),XS(E)::S(F)
- Refutation
- S(a);XP(B)
- Try
- Q(J);CHECK,XR(j)
- Vars
- S(k);P_SPINS(k)::QAR2(J),XP(f)
- Refutation
- S(k);XQ(J)
- Try
- P(H);XR(j)
- Vars
- P(g);CHECK::B(A)+K(C)
- B(b);SBLOCK,XS(E)::S(F)
- S(a);XP(B)::B(A)+K(C)
- P(h);SBLOCK,XS(E)::S(F)
- B(b);::B(A)+K(C),XB(b)
- B(b);N_GUARD::R1(D),XB(b)
- S(a);::B(A)+K(C)
- S(a);::B(A)+K(C),XS(a)
- S(k);OGATE::QAB(J)
- P(d);::B(A)+K(C)
- Refutation
- P(f);
- Try
- Actual
- R(D);
- Vars
- P(f);CHECK,XR(D)::B(A)+K(C),XP(f)
- B(b);SBLOCK,XS(E)::S(F)
- S(a);XP(B)::B(A)+K(C)
- P(h);SBLOCK,XS(E)::S(F)
- P(f);OGATEB::R(D),XP(g)
- B(b);::B(A)+K(C),XB(b)
- B(b);N_GUARD::R1(D),XB(b)
- S(a);::B(A)+K(C)
- S(a);::B(A)+K(C),XS(a)
- S(k);N_GUARD::QAB(J),XR(j)
- S(k);N_SPINR(j),OGATE::QAB(J)
- P(d);::B(A)+K(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).