MESON Chess Problem Database
Problem Display
PID: 68442 (8/3B3p/2Np3P/2pk2P1/2r3nR/3Pp3/2P1N3/6K1 w - - 0 1)
Lewis, Robert Tony
Problem Observer, 2006
#2
9 + 7
SOLUTION
- SOUND
- Sets
- 1...Rxc2
- 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...Rf4
- 2.Sc3#
- 2.Sxf4#
- 1...Sf2
- 2.dxc4#
- 1...Sh2
- 2.dxc4#
- 1...Se5
- 2.Se7#
- 1...Sf6
- 2.dxc4#
- 1...Sxh6
- 2.dxc4#
- 1...Rxc2
- Tries
- 1.Kf1?
- 1...Rf4+
- 2.Sxf4#
- 1...Rxc2
- 2.Sf4#
- 1...Sxh6
- 2.dxc4#
- 1...Rc3
- 2.Sxc3#
- 2.Sf4#
- 1...Ra4
- 2.Sc3#
- 1...Rb4
- 2.Sc3#
- 1...Rd4
- 2.Sc3#
- 1...Re4
- 2.Sc3#
- 1...Sf2
- 2.dxc4#
- 1...Se5
- 2.Se7#
- 1...Sf6
- 2.dxc4#
- 1...Sh2+!
- 1...Rf4+
- 1.Kh1?
- 1...Rxc2
- 2.Sf4#
- 1...Sxh6
- 2.dxc4#
- 1...Rc3
- 2.Sxc3#
- 2.Sf4#
- 1...Ra4
- 2.Sc3#
- 1...Rb4
- 2.Sc3#
- 1...Rd4
- 2.Sc3#
- 1...Re4
- 2.Sc3#
- 1...Rf4
- 2.Sc3#
- 2.Sxf4#
- 1...Sh2
- 2.dxc4#
- 1...Se5
- 2.Se7#
- 1...Sf6
- 2.dxc4#
- 1...Sf2+!
- 1...Rxc2
- 1.Kg2?
- 1...Sxh6
- 2.dxc4#
- 1...Rc3
- 2.Sxc3#
- 2.Sf4#
- 1...Ra4
- 2.Sc3#
- 1...Rb4
- 2.Sc3#
- 1...Rd4
- 2.Sc3#
- 1...Re4
- 2.Sc3#
- 1...Rf4
- 2.Sc3#
- 2.Sxf4#
- 1...Sf2
- 2.dxc4#
- 1...Sh2
- 2.dxc4#
- 1...Se5
- 2.Se7#
- 1...Sf6
- 2.dxc4#
- 1...Rxc2!
- 1...Sxh6
- 1.Rxg4?
- threat
- 2.dxc4#
- 1...Rxc2
- 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...Rf4
- 2.Sc3#
- 2.Sxf4#
- 1...Rxg4+!
- threat
- 1.g6?
- 1...Rxc2
- 2.Sf4#
- 1...Sxh6
- 2.dxc4#
- 1...Rc3
- 2.Sxc3#
- 2.Sf4#
- 1...Ra4
- 2.Sc3#
- 1...Rb4
- 2.Sc3#
- 1...Rd4
- 2.Sc3#
- 1...Re4
- 2.Sc3#
- 1...Rf4
- 2.Sc3#
- 2.Sxf4#
- 1...Sf2
- 2.Rh5#
- 2.dxc4#
- 1...Sh2
- 2.Rh5#
- 2.dxc4#
- 1...Se5
- 2.Se7#
- 1...Sf6
- 2.dxc4#
- 1...hxg6!
- 1...Rxc2
- 1.Kf1?
- Keys
- 1.Rh5!
- 1...Rxc2
- 2.Sf4#
- 1...Sxh6
- 2.gxh6#
- 1...Rc3
- 2.Sxc3#
- 2.Sf4#
- 1...Ra4
- 2.Sc3#
- 1...Rb4
- 2.Sc3#
- 1...Rd4
- 2.Sc3#
- 1...Re4
- 2.Sc3#
- 1...Rf4
- 2.Sc3#
- 2.Sxf4#
- 1...Sf2
- 2.g6#
- 1...Sh2
- 2.g6#
- 1...Se5
- 2.Se7#
- 1...Sf6
- 2.gxf6#
- 1...Rxc2
- 1.Rh5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(b);N_GUARD,XP(B)::S(C)
- R(b);N_GUARD::S(C)
- S(c);::P(D),XR(b)
- S(c);SBLOCK::S(G)
- S(c);XP(H)::P(D),XR(b)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- R(b);CHECK,N_GUARD::S(C),XR(b)
- R(b);N_GUARD,XP(B)::S(C)
- S(c);XP(H)::P(D),XR(b)
- R(b);N_GUARD::S(C)
- S(c);::P(D),XR(b)
- S(c);SBLOCK::S(G)
- Refutation
- S(c);CHECK
- Try
- K(A);P-FLIGHT
- Vars
- R(b);N_GUARD,XP(B)::S(C)
- S(c);XP(H)::P(D),XR(b)
- R(b);N_GUARD::S(C)
- S(c);::P(D),XR(b)
- S(c);SBLOCK::S(G)
- Refutation
- S(c);CHECK
- Try
- K(A);P-FLIGHT
- Vars
- S(c);XP(H)::P(D),XR(b)
- R(b);N_GUARD::S(C)
- S(c);::P(D),XR(b)
- S(c);SBLOCK::S(G)
- Refutation
- R(b);P_PINS(C),XP(B)
- Try
- R(E);XS(c)
- Threat
- P(D),XR(b)
- Vars
- R(b);N_GUARD,XP(B)::S(C)
- R(b);N_GUARD::S(C)
- Refutation
- R(b);CHECK,XR(E)
- Try
- P(F);
- Vars
- R(b);N_GUARD,XP(B)::S(C)
- S(c);XP(H)::P(D),XR(b)
- R(b);N_GUARD::S(C)
- S(c);SBLOCK::S(G)
- S(c);::P(D),XR(b)
- Refutation
- P(g);XP(F)
- Try
- Actual
- R(E);
- Vars
- R(b);N_GUARD,XP(B)::S(C)
- S(c);OGATE,XP(H)::R(E)+P(F),XS(c)
- R(b);N_GUARD::S(C)
- S(c);N_GUARD::R(E)+P(F)
- S(c);SBLOCK::S(G)
- S(c);OGATE::R(E)+P(F),XS(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).