MESON Chess Problem Database
Problem Display
PID: 176063 (8/2Kp1B1P/3BqP1p/1p4bR/1Pkp4/P2R3p/5NnP/3N3Q w - - 0 1)
Schrader, Carl
Schach-Echo, 1940
#2
13 + 9
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Kd5
- 2.Se3#
- 1...Qd5
- 2.Sb2#
- 1...Bc1
- 2.Rc5#
- 1...Bd2
- 2.Sb2#
- 2.Rc5#
- 1...Be3
- 2.Sb2#
- 2.Rc5#
- 1...Bf4
- 2.Sb2#
- 2.Rc5#
- 1...Bh4
- 2.Sb2#
- 2.Rc5#
- 1...Bxf6
- 2.Sb2#
- 2.Rc5#
- 1...Se1
- 2.Sb2#
- 1...Se3
- 2.Sb2#
- 1...Sf4
- 2.Sb2#
- 1...Sh4
- 2.Sb2#
- 1...Kd5
- Tries
- 1.Se3+?
- 1...Bxe3
- 2.Rc5#
- 1...dxe3
- 2.Qc1#
- 1...Sxe3!
- 1...Bxe3
- 1.Rc3+?
- 1...Kd5
- 2.Rc5#
- 1...dxc3!
- 1...Kd5
- 1.Rxg5?
- threat
- 2.Sb2#
- 2.Rc5#
- 1...Qd5
- 2.Sb2#
- 2.Bxd5#
- 1...hxg5!
- threat
- 1.Qxg2?
- threat
- 2.Sb2#
- 1...Bc1
- 2.Rc5#
- 1...hxg2!
- threat
- 1.h8Q?
- 1...Kd5
- 2.Se3#
- 1...Bxf6
- 2.Sb2#
- 2.Rc5#
- 1...Qd5
- 2.Sb2#
- 1...Bc1
- 2.Rc5#
- 1...Bd2
- 2.Sb2#
- 2.Rc5#
- 1...Be3
- 2.Sb2#
- 2.Rc5#
- 1...Bf4
- 2.Sb2#
- 2.Rc5#
- 1...Bh4
- 2.Sb2#
- 2.Rc5#
- 1...Se1
- 2.Sb2#
- 1...Se3
- 2.Sb2#
- 1...Sf4
- 2.Sb2#
- 1...Sh4
- 2.Sb2#
- 1...Qxf7!
- 1...Kd5
- 1.h8S?
- 1...Kd5
- 2.Se3#
- 1...Bxf6
- 2.Sb2#
- 2.Rc5#
- 1...Qd5
- 2.Sb2#
- 1...Bc1
- 2.Rc5#
- 1...Bd2
- 2.Sb2#
- 2.Rc5#
- 1...Be3
- 2.Sb2#
- 2.Rc5#
- 1...Bf4
- 2.Sb2#
- 2.Rc5#
- 1...Bh4
- 2.Sb2#
- 2.Rc5#
- 1...Se1
- 2.Sb2#
- 1...Se3
- 2.Sb2#
- 1...Sf4
- 2.Sb2#
- 1...Sh4
- 2.Sb2#
- 1...Qxf7!
- 1...Kd5
- 1.h8B?
- 1...Kd5
- 2.Se3#
- 1...Bxf6
- 2.Sb2#
- 2.Rc5#
- 1...Qd5
- 2.Sb2#
- 1...Bc1
- 2.Rc5#
- 1...Bd2
- 2.Sb2#
- 2.Rc5#
- 1...Be3
- 2.Sb2#
- 2.Rc5#
- 1...Bf4
- 2.Sb2#
- 2.Rc5#
- 1...Bh4
- 2.Sb2#
- 2.Rc5#
- 1...Se1
- 2.Sb2#
- 1...Se3
- 2.Sb2#
- 1...Sf4
- 2.Sb2#
- 1...Sh4
- 2.Sb2#
- 1...Qxf7!
- 1...Kd5
- 1.h8R?
- 1...Kd5
- 2.Se3#
- 1...Bxf6
- 2.Sb2#
- 2.Rc5#
- 1...Qd5
- 2.Sb2#
- 1...Bc1
- 2.Rc5#
- 1...Bd2
- 2.Sb2#
- 2.Rc5#
- 1...Be3
- 2.Sb2#
- 2.Rc5#
- 1...Bf4
- 2.Sb2#
- 2.Rc5#
- 1...Bh4
- 2.Sb2#
- 2.Rc5#
- 1...Se1
- 2.Sb2#
- 1...Se3
- 2.Sb2#
- 1...Sf4
- 2.Sb2#
- 1...Sh4
- 2.Sb2#
- 1...Qxf7!
- 1...Kd5
- 1.Se3+?
- Keys
- 1.Bg8!
- 1...Kd5
- 2.Se3#
- 1...Qxg8
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bxf6
- 2.Sb2#
- 2.Rc5#
- 1...Qd5
- 2.Sb2#
- 1...Qf7
- 2.Bxf7#
- 1...Bc1
- 2.Rc5#
- 1...Bd2
- 2.Sb2#
- 2.Rc5#
- 1...Be3
- 2.Sb2#
- 2.Rc5#
- 1...Bf4
- 2.Sb2#
- 2.Rc5#
- 1...Bh4
- 2.Sb2#
- 2.Rc5#
- 1...Se1
- 2.Sb2#
- 1...Se3
- 2.Sb2#
- 1...Sf4
- 2.Sb2#
- 1...Sh4
- 2.Sb2#
- 1...Kd5
- 1.Bg8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- K(c);P_SPINB(f),P_SPINP(d),P_SPINS(a),S_FLIGHT::S(A)
- Q(g);::S(A)
- B(f);OGATE::R1(H)
- S(a);::S(A)
- Tries
- Try
- S(A);CHECK
- Vars
- B(f);OGATE,XS(A)::R1(H)
- P(d);XS(A)::QAR(B)
- Refutation
- S(a);XS(A)
- Try
- R(F);CHECK
- Vars
- K(c);OGATE,P_SPINB(f),P_SPINS(a),S_FLIGHT::R1(F)
- Refutation
- P(d);XR(F)
- Try
- R(H);XB(f)
- Threat
- DUALS(2)
- Refutation
- P(h);XR(H)
- Try
- Q(B);XS(a)
- Threat
- S(A)
- Vars
- B(f);OGATE::R1(H)
- Refutation
- P(b);XQ(B)
- Try
- P(M);
- Vars
- K(c);P_SPINB(f),P_SPINP(d),P_SPINS(a),S_FLIGHT::S(A)
- Q(g);::S(A)
- B(f);OGATE::R1(H)
- S(a);::S(A)
- Refutation
- Q(g);N_SPINQ(g),XB(L)
- Try
- P(M);
- Vars
- K(c);P_SPINB(f),P_SPINP(d),P_SPINS(a),S_FLIGHT::S(A)
- Q(g);::S(A)
- B(f);OGATE::R1(H)
- S(a);::S(A)
- Refutation
- Q(g);N_SPINQ(g),XB(L)
- Try
- P(M);
- Vars
- K(c);P_SPINB(f),P_SPINP(d),P_SPINS(a),S_FLIGHT::S(A)
- Q(g);::S(A)
- B(f);OGATE::R1(H)
- S(a);::S(A)
- Refutation
- Q(g);N_SPINQ(g),XB(L)
- Try
- P(M);
- Vars
- K(c);P_SPINB(f),P_SPINP(d),P_SPINS(a),S_FLIGHT::S(A)
- Q(g);::S(A)
- B(f);OGATE::R1(H)
- S(a);::S(A)
- Refutation
- Q(g);N_SPINQ(g),XB(L)
- Try
- Actual
- B(L);
- Vars
- K(c);P_SPINB(f),P_SPINP(d),P_SPINS(a),S_FLIGHT::S(A)
- Q(g);N_SPINQ(g),OGATE,XB(L)::PXQ(g)=Q
- Q(g);::S(A)
- Q(g);OGATEB::B(L),XQ(g)
- B(f);OGATE::R1(H)
- S(a);::S(A)
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).