MESON Chess Problem Database
Problem Display
PID: 78491 (4RB2/2p3p1/N4pP1/1P1kPP2/2rN4/4PK2/5p2/5B2 w - - 0 1)
Andersson, Gunnar
Ekstrom, Sven Johan Adrian
Schackvarlden, 1944
#2
11 + 6
SOLUTION
- SOUND
- Sets
- 1...Rc1
- 2.Sb4#
- 1...Rc2
- 2.Sb4#
- 1...Rc3
- 2.Sb4#
- 1...Ra4
- 2.Sxc7#
- 1...Rb4
- 2.Sxb4#
- 2.Sxc7#
- 1...Rxd4
- 2.Sxc7#
- 1...Rc5
- 2.Sb4#
- 1...Rc6
- 2.Sb4#
- 1...fxe5
- 2.Rd8#
- 1...c5
- 2.Sc7#
- 1...c6
- 2.Sc7#
- 1...Rc1
- Tries
- 1.Kf4?
- threat
- 2.Bg2#
- 2.Rd8#
- 1...fxe5+
- 2.Rxe5#
- 1...Rc1
- 2.Sb4#
- 2.Rd8#
- 1...Rc2
- 2.Sb4#
- 2.Rd8#
- 1...Rc3
- 2.Sb4#
- 2.Rd8#
- 1...Ra4
- 2.Sxc7#
- 2.Rd8#
- 1...Rb4
- 2.Sxb4#
- 2.Sxc7#
- 2.Rd8#
- 1...Rc5
- 2.Sb4#
- 2.Rd8#
- 1...Rc6
- 2.Sb4#
- 1...Rxd4+!
- threat
- 1.Sc2?
- 1...Rxc2
- 2.Sb4#
- 1...fxe5
- 2.Rd8#
- 1...Rc3
- 2.Scb4#
- 2.Sab4#
- 1...Ra4
- 2.Sxc7#
- 1...Rb4
- 2.Scxb4#
- 2.Saxb4#
- 2.Sxc7#
- 1...Rd4
- 2.Sxc7#
- 1...Re4
- 2.Sxc7#
- 1...Rg4
- 2.Sxc7#
- 1...Rh4
- 2.Sxc7#
- 1...Rc5
- 2.Scb4#
- 2.Sab4#
- 2.e4#
- 1...Rc6
- 2.Scb4#
- 2.Sab4#
- 2.e4#
- 1...c5
- 2.Sc7#
- 1...c6
- 2.Sc7#
- 1...Rf4+!
- 1...Rxc2
- 1.Sb3?
- 1...fxe5
- 2.Rd8#
- 1...Rc1
- 2.Sb4#
- 2.e4#
- 1...Rc2
- 2.Sb4#
- 2.e4#
- 1...Rc3
- 2.Sb4#
- 1...Ra4
- 2.Sxc7#
- 1...Rb4
- 2.Sxb4#
- 2.Sxc7#
- 1...Rd4
- 2.Sxc7#
- 1...Re4
- 2.Sxc7#
- 1...Rg4
- 2.Sxc7#
- 1...Rh4
- 2.Sxc7#
- 1...Rc5
- 2.Sb4#
- 2.e4#
- 1...Rc6
- 2.Sb4#
- 2.e4#
- 1...c5
- 2.Sc7#
- 1...c6
- 2.Sc7#
- 1...Rf4+!
- 1...fxe5
- 1.Sc6?
- threat
- 2.Sxc7#
- 2.Rd8#
- 1...Rxc6
- 2.Sb4#
- 1...Rf4+!
- threat
- 1.Se6?
- 1...Rf4+
- 2.Sxf4#
- 1...fxe5
- 2.Rd8#
- 1...Rc1
- 2.Sf4#
- 1...Rc2
- 2.Sf4#
- 1...Rc3
- 2.Sf4#
- 1...Ra4
- 2.Sexc7#
- 1...Rb4
- 2.Sexc7#
- 1...Rd4
- 2.Sexc7#
- 1...Re4
- 2.Sexc7#
- 1...Rg4
- 2.Sexc7#
- 1...Rh4
- 2.Sexc7#
- 1...Rc5
- 2.Sf4#
- 1...Rc6
- 2.Sf4#
- 1...c5
- 2.Sec7#
- 1...c6
- 2.Sec7#
- 1...Kxe5!
- 1...Rf4+
- 1.Re6?
- 1...Rxd4
- 2.Sxc7#
- 1...Rc1
- 2.Sb4#
- 1...Rc2
- 2.Sb4#
- 1...Rc3
- 2.Sb4#
- 1...Ra4
- 2.Sxc7#
- 1...Rb4
- 2.Sxb4#
- 2.Sxc7#
- 1...Rc5
- 2.Sb4#
- 1...Rc6
- 2.Sb4#
- 1...c5
- 2.Sc7#
- 1...c6
- 2.Sc7#
- 1...fxe5!
- 1...Rxd4
- 1.exf6?
- 1...Rxd4
- 2.Sxc7#
- 1...Rc1
- 2.Sb4#
- 1...Rc2
- 2.Sb4#
- 1...Rc3
- 2.Sb4#
- 1...Ra4
- 2.Sxc7#
- 1...Rb4
- 2.Sxb4#
- 2.Sxc7#
- 1...Rc5
- 2.Sb4#
- 1...Rc6
- 2.Sb4#
- 1...c5
- 2.Sc7#
- 1...c6
- 2.Sc7#
- 1...gxf6!
- 1...Rxd4
- 1.Kf4?
- Keys
- 1.Se2!
- 1...Rf4+
- 2.Sxf4#
- 1...fxe5
- 2.Rd8#
- 1...Rc1
- 2.Sf4#
- 1...Rc2
- 2.Sf4#
- 1...Rc3
- 2.Sxc3#
- 2.Sf4#
- 1...Ra4
- 2.Sc3#
- 1...Rb4
- 2.Sc3#
- 1...Rd4
- 2.Sc3#
- 1...Re4
- 2.Sc3#
- 1...Rg4
- 2.Sc3#
- 1...Rh4
- 2.Sc3#
- 1...Rc5
- 2.Sf4#
- 1...Rc6
- 2.Sf4#
- 1...c5
- 2.Sc7#
- 1...c6
- 2.Sc7#
- 1...Rf4+
- 1.Se2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 6
- ADDED MATES = 5
- REMOVED MATES = 1
- Sets
- R(b);N_GUARD::S(H)
- R(b);N_GUARD,P_PINP(B)::S(H)
- R(b);N_GUARD::S(H),XP(e)
- R(b);N_GUARD,XS(D)::S(H),XP(e)
- P(d);SBLOCK,XP(F)::R(J)
- P(e);S_CUTR(b)::S(H)
- Tries
- Try
- K(C);P-FLIGHT,P_SPINS(D)
- Threat
- DUALS(2)
- Vars
- P(d);CHECK,OGATE,XP(F)::R1(J),XP(d)
- R(b);N_GUARD,N_PINS(D)::S(H)
- Refutation
- R(b);CHECK,XS(D)
- Try
- S(D);
- Vars
- R(b);N_GUARD,XS(D)::S(H)
- P(d);SBLOCK,XP(F)::R(J)
- R(b);N_GUARD::S(H),XP(e)
- P(e);S_CUTR(b)::S(H)
- Refutation
- R(b);CHECK
- Try
- S(D);
- Vars
- P(d);SBLOCK,XP(F)::R(J)
- R(b);N_GUARD,P_PINP(B)::S(H)
- R(b);N_GUARD::S(H),XP(e)
- P(e);S_CUTR(b)::S(H)
- Refutation
- R(b);CHECK
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- R(b);N_GUARD,XS(D)::S(H)
- Refutation
- R(b);CHECK
- Try
- S(D);
- Vars
- R(b);CHECK,N_GUARD::S(D),XR(b)
- P(d);SBLOCK,XP(F)::R(J)
- R(b);N_GUARD::S(D)
- R(b);N_GUARD,P_PINP(B)::S(D)
- R(b);N_GUARD::S(D),XP(e)
- P(e);S_CUTR(b)::S(D)
- Refutation
- K(c);P-FLIGHT,XP(F)
- Try
- R(J);
- Vars
- R(b);N_GUARD,XS(D)::S(H),XP(e)
- R(b);N_GUARD::S(H)
- R(b);N_GUARD,P_PINP(B)::S(H)
- R(b);N_GUARD::S(H),XP(e)
- P(e);S_CUTR(b)::S(H)
- Refutation
- P(d);XP(F)
- Try
- P(F);XP(d)
- Vars
- R(b);N_GUARD,XS(D)::S(H),XP(e)
- R(b);N_GUARD::S(H)
- R(b);N_GUARD,P_PINP(B)::S(H)
- R(b);N_GUARD::S(H),XP(e)
- P(e);S_CUTR(b)::S(H)
- Refutation
- P(f);XP(F)
- Try
- Actual
- S(D);
- Vars
- R(b);CHECK,N_GUARD::S(D),XR(b)
- P(d);SBLOCK,XP(F)::R(J)
- R(b);N_GUARD::S(D)
- P(e);S_CUTR(b)::S(H)
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).