MESON Chess Problem Database
Problem Display
PID: 259455 (B7/1rR4K/N1n3Q1/2pk4/2p5/2Pb3p/1rn2PNB/3R4 w - - 0 1)
Cheylan, Yves
Michel, Francois
Schweizerische Arbeiter Schachzeitung, 1973
#2
10 + 9
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rb3
- 2.Bxc6#
- 2.Rd7#
- 2.Qf5#
- 1...Rb4
- 2.Bxc6#
- 2.Rd7#
- 2.Qf5#
- 1...Rb5
- 2.Bxc6#
- 2.Rd7#
- 2.Qf5#
- 1...Rb6
- 2.Rd7#
- 2.Qf5#
- 1...Ra7
- 2.Bxc6#
- 2.Qf5#
- 1...Rxc7+
- 2.Sxc7#
- 1...Rb8
- 2.Bxc6#
- 2.Rd7#
- 2.Qf5#
- 1...Sa1
- 2.Se3#
- 1...Se1
- 2.Se3#
- 1...Sa3
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...S2b4
- 2.Se3#
- 1...S2d4
- 2.Se3#
- 1...S6b4
- 2.Rd7#
- 2.Qf5#
- 1...S6d4
- 2.Rd7#
- 1...Sa5
- 2.Rd7#
- 2.Qf5#
- 1...Se5
- 2.Sf4#
- 1...Sa7
- 2.Rd7#
- 2.Qf5#
- 1...Se7
- 2.Rxc5#
- 2.Rd7#
- 1...Sb8
- 2.Qf5#
- 1...Sd8
- 2.Rd7#
- 2.Qf5#
- 1...Rb3
- Tries
- 1.Kh6?
- threat
- 2.Qxc6#
- 1...Rxc7
- 2.Sxc7#
- 2.Qf5#
- 1...R7b6
- 2.Rd7#
- 2.Qf5#
- 1...S2b4
- 2.Se3#
- 1...S2d4
- 2.Se3#
- 1...S6b4
- 2.Rxc5#
- 2.Rd7#
- 2.Qf5#
- 1...S6d4
- 2.Rxc5#
- 2.Rd7#
- 1...Sa5
- 2.Rxc5#
- 2.Rd7#
- 2.Qf5#
- 1...Se5
- 2.Sf4#
- 2.Rxc5#
- 1...Sa7
- 2.Rxc5#
- 2.Rd7#
- 2.Qf5#
- 1...Se7
- 2.Rxc5#
- 2.Rd7#
- 1...Sb8
- 2.Rxc5#
- 2.Qf5#
- 1...Sd8
- 2.Rxc5#
- 2.Rd7#
- 2.Qf5#
- 1...R2b6!
- threat
- 1.Kg7?
- threat
- 2.Qxc6#
- 1...Rxc7+
- 2.Sxc7#
- 1...R7b6
- 2.Rd7#
- 2.Qf5#
- 1...S2b4
- 2.Se3#
- 1...S2d4
- 2.Se3#
- 1...S6b4
- 2.Rd7#
- 2.Qf5#
- 1...S6d4
- 2.Rd7#
- 1...Sa5
- 2.Rd7#
- 2.Qf5#
- 1...Se5
- 2.Sf4#
- 1...Sa7
- 2.Rd7#
- 2.Qf5#
- 1...Se7
- 2.Rxc5#
- 2.Rd7#
- 1...Sb8
- 2.Qf5#
- 1...Sd8
- 2.Rd7#
- 2.Qf5#
- 1...R2b6!
- threat
- 1.Bd6?
- threat
- 2.Sf4#
- 1...Rxc7+
- 2.Sxc7#
- 1...hxg2!
- threat
- 1.Bxb7?
- threat
- 2.Bxc6#
- 2.Rd7#
- 2.Qf5#
- 1...Rb6
- 2.Rd7#
- 2.Qf5#
- 1...Se3
- 2.Sxe3#
- 2.Bxc6#
- 2.Rd7#
- 1...Sb4
- 2.Se3#
- 2.Rd7#
- 2.Qf5#
- 1...Sd4
- 2.Se3#
- 2.Rd7#
- 1...Rxb7!
- threat
- 1.Rxd3+?
- 1...S2d4
- 2.Se3#
- 2.Qxc6#
- 1...S6d4
- 2.Rd7#
- 2.Qf5#
- 2.Qc6#
- 1...cxd3!
- 1...S2d4
- 1.Re7?
- threat
- 2.Sf4#
- 2.Qe4#
- 1...Sxe7
- 2.Sc7#
- 1...hxg2
- 2.Qe4#
- 1...S2d4
- 2.Se3#
- 2.Sf4#
- 1...S6d4
- 2.Sf4#
- 2.Sc7#
- 2.Rd7#
- 1...Se5
- 2.Sf4#
- 2.Sc7#
- 1...Rxe7+!
- threat
- 1.Kh6?
- Keys
- 1.f3!
- threat
- 2.Qe4#
- 1...Rxc7+
- 2.Sxc7#
- 1...S2d4
- 2.Se3#
- 1...S6d4
- 2.Rd7#
- 1...Se5
- 2.Sf4#
- threat
- 1.f3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 6
- Sets
- R(i);CHECK,P_SPINS(h),XR(H)::S(F),XR(i)
- S(b);N_GUARD::S(C)
- S(b);N_GUARD::S(C),XS(b)
- S(b);N_GUARD,N_SPINB(c)::S(C)
- S(h);N_SPINB(c),P_SPINR(i)::R(H)
- S(h);P_SPINR(i),SBLOCK::S(C)
- S(h);N_GUARD,P_SPINR(i)::QAR2(G)
- Tries
- Try
- K(I);N_SPINQ(G),N_SPINR(H),P-FLIGHT
- Threat
- QAB1(G),XS(h)
- Vars
- S(b);N_GUARD::S(C)
- S(b);N_GUARD,N_SPINB(c)::S(C)
- Refutation
- R(a);
- Try
- K(I);N_SPINQ(G),P-FLIGHT
- Threat
- QAB1(G),XS(h)
- Vars
- R(i);CHECK,P_SPINS(h),XR(H)::S(F),XR(i)
- S(b);N_GUARD::S(C)
- S(b);N_GUARD,N_SPINB(c)::S(C)
- S(h);N_SPINB(c),P_SPINR(i)::R(H)
- S(h);P_SPINR(i),SBLOCK::S(C)
- S(h);N_GUARD,P_SPINR(i)::QAR2(G)
- Refutation
- R(a);
- Try
- B(D);
- Threat
- S(C)
- Vars
- R(i);CHECK,P_SPINS(h),XR(H)::S(F),XR(i)
- Refutation
- P(d);XS(C)
- Try
- B(J);N_SPINR(H),P_PINS(h),XR(i)
- Threat
- DUALS(3)
- Refutation
- R(a);N_SPINS(h),P_PINR(H),XB(J)
- Try
- R(A);CHECK,N_SPINQ(G),XB(c)
- Refutation
- P(e);XR(A)
- Try
- R(H);
- Threat
- DUALS(2)
- Vars
- S(h);P_SPINR(i),XR(H)::S(F)
- P(d);XS(C)::QAB1(G)
- Refutation
- R(i);CHECK,P_SPINS(h),XR(H)
- Try
- Actual
- P(B);
- Threat
- QAB1(G)
- Vars
- R(i);CHECK,P_SPINS(h),XR(H)::S(F),XR(i)
- S(b);N_GUARD,N_SPINB(c)::S(C)
- S(h);N_SPINB(c),P_SPINR(i)::R(H)
- S(h);P_SPINR(i),SBLOCK::S(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).