MESON Chess Problem Database
Problem Display
PID: 231337 (1Q1nR3/2PpN3/3k4/8/7B/1r1N2P1/BPp5/n1K5 w - - 0 1)
Kruglov, BV
64 Shakhmatnoe obozrenie, 1927
#2
10 + 6
| 6490 | yacpdb | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ke6
- 2.cxd8S#
- 1...Rxb2
- 2.c8S#
- 1...Ra3
- 2.cxd8Q#
- 2.cxd8S#
- 2.cxd8B#
- 2.cxd8R#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Rc3
- 2.c8S#
- 1...Rxd3
- 2.c8Q#
- 2.c8R#
- 1...Rb4
- 2.c8S#
- 1...Rb5
- 2.c8S#
- 1...Rb6
- 2.c8S#
- 1...Rb7
- 2.c8S#
- 1...Rxb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...Se6
- 2.c8S#
- 1...Ke6
- Tries
- 1.Sf5+?
- 1...Kd5
- 2.Qb5#
- 1...Kc6!
- 1...Kd5
- 1.Bxb3?
- threat
- 2.cxd8Q#
- 2.cxd8S#
- 2.cxd8B#
- 2.cxd8R#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Sc6
- 2.Sf5#
- 2.Sc8#
- 2.c8S#
- 1...Se6
- 2.Qb6#
- 2.c8S#
- 1...Sb7
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Sf7
- 2.Qb6#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Sxb3+!
- threat
- 1.Rxd8?
- 1...Rxb2
- 2.c8S#
- 1...Rxd3
- 2.c8Q#
- 2.c8R#
- 1...Rxb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...Ra3
- 2.Qb6#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Rc3
- 2.c8S#
- 1...Rb4
- 2.c8S#
- 1...Rb5
- 2.c8S#
- 1...Rb6
- 2.Qxb6#
- 2.c8S#
- 1...Rb7
- 2.c8S#
- 1...Ke6!
- 1...Rxb2
- 1.Rh8?
- 1...Ke6
- 2.cxd8S#
- 1...Rxb2
- 2.c8S#
- 1...Rxd3
- 2.c8Q#
- 2.c8R#
- 1...Rxb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sc6
- 2.Rh6#
- 1...Ra3
- 2.cxd8Q#
- 2.cxd8S#
- 2.cxd8B#
- 2.cxd8R#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Rc3
- 2.c8S#
- 1...Rb4
- 2.c8S#
- 1...Rb5
- 2.c8S#
- 1...Rb6
- 2.c8S#
- 1...Rb7
- 2.c8S#
- 1...Se6
- 2.c8S#
- 1...Sb7
- 2.Rh6#
- 1...Sf7!
- 1...Ke6
- 1.cxd8Q+?
- 1...Rxb8
- 2.Qxb8#
- 1...Ke6!
- 1...Rxb8
- 1.c8Q+?
- 1...Rxb8
- 2.Sf5#
- 2.Qc5#
- 2.Qxb8#
- 1...Ke6!
- 1...Rxb8
- 1.c8R+?
- 1...Rxb8
- 2.Sf5#
- 1...Ke6!
- 1...Rxb8
- 1.Sf5+?
- Keys
- 1.Rg8!
- 1...Ke6
- 2.cxd8S#
- 1...Rxb2
- 2.c8S#
- 1...Rxd3
- 2.c8Q#
- 2.c8R#
- 1...Rxb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sc6
- 2.Rg6#
- 1...Ra3
- 2.cxd8Q#
- 2.cxd8S#
- 2.cxd8B#
- 2.cxd8R#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Rc3
- 2.c8S#
- 1...Rb4
- 2.c8S#
- 1...Rb5
- 2.c8S#
- 1...Rb6
- 2.c8S#
- 1...Rb7
- 2.c8S#
- 1...Se6
- 2.c8S#
- 1...Sb7
- 2.Rg6#
- 1...Sf7
- 2.Rg6#
- 1...Ke6
- 1.Rg8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- K(d);P-FLIGHT,P_SPINR(c)::PXS(f)=S
- R(c);N_GUARD,XP(C)::P=S
- R(c);N_GUARD::P=S
- R(c);N_GUARD,XS(D)::P=Q
- R(c);OGATE,XQ(I)::PXR(c)=Q
- S(f);SBLOCK::P=S
- Tries
- Try
- S(H);CHECK
- Vars
- K(d);P-FLIGHT,P_SPINR(c)::QAR2(I)
- Refutation
- K(d);P-FLIGHT
- Try
- B(B);XR(c)
- Threat
- DUALS(8)
- Refutation
- S(a);CHECK,XB(B)
- Try
- R(J);P_PINP(e),XS(f)
- Vars
- R(c);N_GUARD,XP(C)::P=S
- R(c);N_GUARD,XS(D)::P=Q
- R(c);OGATE,XQ(I)::PXR(c)=Q
- R(c);N_GUARD::P=S
- Refutation
- K(d);N_SPINP(e),P-FLIGHT,P_SPINR(c)
- Try
- R(J);
- Vars
- K(d);P-FLIGHT,P_SPINR(c)::PXS(f)=S
- R(c);N_GUARD,XP(C)::P=S
- R(c);N_GUARD,XS(D)::P=Q
- R(c);OGATE,XQ(I)::PXR(c)=Q
- S(f);N_GUARD::R(J)
- R(c);N_GUARD::P=S
- S(f);SBLOCK::P=S
- Refutation
- S(f);
- Try
- P(G);CHECK,P_PINP(e),XS(f)
- Vars
- R(c);OGATE,XQ(I)::QAB(G),XR(c)
- Refutation
- K(d);N_SPINP(e),P-FLIGHT,P_SPINR(c)
- Try
- P(G);CHECK
- Refutation
- K(d);P-FLIGHT,P_SPINP(e),P_SPINR(c)
- Try
- P(G);CHECK
- Vars
- R(c);XQ(I)::S(H)
- Refutation
- K(d);P-FLIGHT,P_SPINR(c)
- Try
- Actual
- R(J);
- Vars
- K(d);P-FLIGHT,P_SPINR(c)::PXS(f)=S
- R(c);N_GUARD,XP(C)::P=S
- R(c);N_GUARD,XS(D)::P=Q
- R(c);OGATE,XQ(I)::PXR(c)=Q
- S(f);N_GUARD::R(J)
- R(c);N_GUARD::P=S
- S(f);SBLOCK::P=S
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).