MESON Chess Problem Database
Problem Display
PID: 262879 (b3R3/3p4/N4q1Q/3k1p1n/2RP4/B4K2/B6b/8 w - - 0 1)
Suvorov, Ivan
Zadachi i Etyudi, 2008
#2
8 + 7
SOLUTION
- SOUND
- Sets
- 1...Qxd4
- 2.Sb4#
- 2.Rc5#
- 1...Qh4
- 2.Sb4#
- 2.Ra4#
- 2.Rb4#
- 1...Qe5
- 2.Sb4#
- 2.Ra4#
- 2.Rb4#
- 1...Qg5
- 2.Sb4#
- 2.Ra4#
- 2.Rb4#
- 1...Qe7
- 2.Ra4#
- 2.Rb4#
- 1...Qg7
- 2.Sb4#
- 2.Ra4#
- 2.Rb4#
- 1...Qd8
- 2.Sb4#
- 2.Ra4#
- 2.Rb4#
- 1...Qh8
- 2.Sb4#
- 2.Ra4#
- 2.Rb4#
- 1...Qb6
- 2.Rb4#
- 1...Qc6
- 2.Sb4#
- 1...Qf7
- 2.Sb4#
- 2.Ra4#
- 2.Rb4#
- 1...Qf8
- 2.Ra4#
- 2.Rb4#
- 1...Bg1
- 2.Sc7#
- 1...Bc7
- 2.Sxc7#
- 1...Bc6
- 2.Ra4#
- 1...Sg3
- 2.Sc7#
- 1...Sf4
- 2.Sc7#
- 1...f4
- 2.Sc7#
- 1...d6
- 2.Sb4#
- 2.Sc7#
- 1...Qxd4
- Tries
- 1.Rc6+?
- 1...Kxd4
- 2.Qd2#
- 2.Qe3#
- 1...Kxc6!
- 1...Kxd4
- 1.Re4?
- threat
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc7#
- 2.Rc8#
- 1...Qxd4
- 2.Sb4#
- 2.Rcxd4#
- 2.Rc5#
- 1...Qxa6
- 2.Rc5#
- 1...Qb6
- 2.Rb4#
- 2.Rc5#
- 1...Qc6
- 2.Sb4#
- 2.Rc5#
- 2.Rxc6#
- 1...Bc7
- 2.Sxc7#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rxc7#
- 1...Bc6
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Ra4#
- 1...fxe4+!
- threat
- 1.Re5+?
- 1...Qxe5
- 2.Sb4#
- 2.Ra4#
- 2.Rb4#
- 1...Bxe5!
- 1...Qxe5
- 1.Qf4?
- threat
- 2.Sb4#
- 2.Sc7#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc5#
- 2.Rc7#
- 2.Rcc8#
- 1...Qxd4
- 2.Sb4#
- 2.Sc7#
- 2.Rc5#
- 2.Qxd4#
- 1...Qxa6
- 2.Rc5#
- 2.Re5#
- 1...Sxf4
- 2.Sc7#
- 1...Qe7
- 2.Sc7#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc5#
- 2.Rc7#
- 2.Rcc8#
- 1...Qb6
- 2.Rc5#
- 2.Re5#
- 1...Qe5
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc7#
- 2.Rcc8#
- 2.Rxe5#
- 1...Qd8
- 2.Sb4#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc5#
- 2.Rc7#
- 2.Rc8#
- 2.Re5#
- 1...Qc6
- 2.Sb4#
- 2.Rc5#
- 2.Re5#
- 1...Qd6
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc5#
- 2.Rc7#
- 2.Rcc8#
- 1...Qf8
- 2.Sc7#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc5#
- 2.Rc7#
- 2.Rcc8#
- 2.Re5#
- 1...Bc6
- 2.Sb4#
- 2.Sc7#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Ra4#
- 2.Rb4#
- 2.Rc5#
- 1...Bxf4!
- threat
- 1.Qxf6?
- threat
- 2.Sb4#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Ra4#
- 2.Rb4#
- 2.Rc5#
- 2.Rc6#
- 2.Rc7#
- 2.Rcc8#
- 2.Qf7#
- 1...Be5
- 2.Sb4#
- 2.Ra4#
- 2.Rb4#
- 2.Rxe5#
- 2.Qxe5#
- 2.Qf7#
- 1...Bd6
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc5#
- 2.Rc7#
- 2.Rcc8#
- 2.Qxd6#
- 2.Qf7#
- 1...Bc7
- 2.Sb4#
- 2.Sxc7#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Ra4#
- 2.Rb4#
- 2.Rc5#
- 2.Rc6#
- 2.Rxc7#
- 2.Qf7#
- 1...Bc6
- 2.Sb4#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Ra4#
- 2.Rb4#
- 2.Rc5#
- 2.Rxc6#
- 2.Qf7#
- 1...Sf4
- 2.Sb4#
- 2.Sc7#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Ra4#
- 2.Rb4#
- 2.Rc5#
- 2.Rc6#
- 2.Rc7#
- 2.Rcc8#
- 2.Re5#
- 2.Qe5#
- 2.Qxf5#
- 2.Qd6#
- 1...Sg7
- 2.Sb4#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Ra4#
- 2.Rb4#
- 2.Rc5#
- 2.Rc6#
- 2.Rc7#
- 2.Rcc8#
- 1...d6
- 2.Sb4#
- 2.Sc7#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc5#
- 2.Rc7#
- 2.Rcc8#
- 2.Qe6#
- 2.Qf7#
- 1...Sxf6!
- threat
- 1.Rc6+?
- Keys
- 1.Rec8!
- threat
- 2.Ra4#
- 1...Ke6+
- 2.R4c6#
- 1...Qxd4
- 2.R4c5#
- 1...Qxa6
- 2.R8c5#
- 1...Qb6
- 2.Rb4#
- 1...Qc6
- 2.Sb4#
- 1...Bc7
- 2.Sxc7#
- threat
- 1.Rec8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 5
- Sets
- Q(e);::B(A)+R(D)
- Q(e);::S(F)
- B(a);N_GUARD::S(F)
- B(a);N_GUARD::S(F),XB(a)
- B(g);SBLOCK::B(A)+R(D)
- S(d);S_CUTB(a)::S(F)
- P(c);S_CUTB(a)::S(F)
- Tries
- Try
- R(D);CHECK
- Refutation
- K(b);P_SPINQ(e),S_FLIGHT,XR(D)
- Try
- R(H);
- Threat
- DUALS(5)
- Vars
- Q(e);XS(F)::B(A)+R(D),DCHECK
- Refutation
- P(c);CHECK,XR(H)
- Try
- R(H);CHECK
- Refutation
- B(a);XR(H)
- Try
- Q(G);
- Threat
- DUALS(8)
- Vars
- S(d);XQ(G)::S(F)
- Refutation
- B(a);XQ(G)
- Try
- Q(G);XQ(e)
- Threat
- DUALS(11)
- Refutation
- S(d);XQ(G)
- Try
- Actual
- R(H);
- Threat
- B(A)+R(D)
- Vars
- K(b);CHECK,N_GUARD,P_SPINQ(e),S_FLIGHT::B(A)+R(D),DCHECK
- Q(e);SBLOCK,XP(E)::B(A)+R(D),DCHECK
- Q(e);XS(F)::R1(H)
- Q(e);::B(A)+R(D)
- Q(e);::S(F)
- B(a);N_GUARD::S(F),XB(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).