MESON Chess Problem Database
Problem Display
PID: 16339 (1B3b2/1P1k1P1R/2N2RBp/2P4P/p7/Pp4n1/1K6/8 w - - 0 1)
Gunn, Robert Ivan
Chess, 1940
#2
11 + 6
SOLUTION
- SOUND
- Sets
- 1...Bxc5
- 2.f8S#
- 1...Bd6
- 2.Rxd6#
- 1...Be7
- 2.f8S#
- 1...Bg7
- 2.f8S#
- 1...Sf1
- 2.Bf5#
- 1...Sh1
- 2.Bf5#
- 1...Se2
- 2.Bf5#
- 1...Se4
- 2.Bf5#
- 1...Sf5
- 2.Bxf5#
- 1...Sxh5
- 2.Bf5#
- 1...Bxc5
- Tries
- 1.Ka1?
- 1...Bxc5
- 2.f8S#
- 1...Sxh5
- 2.Bf5#
- 1...Bd6
- 2.Rxd6#
- 1...Be7
- 2.f8S#
- 1...Bg7
- 2.f8S#
- 1...Sf1
- 2.Bf5#
- 1...Sh1
- 2.Bf5#
- 1...Se2
- 2.Bf5#
- 1...Se4
- 2.Bf5#
- 1...Sf5
- 2.Bxf5#
- 1...b2+!
- 1...Bxc5
- 1.Kb1?
- 1...Bxc5
- 2.f8S#
- 1...Sxh5
- 2.Bf5#
- 1...Bd6
- 2.Rxd6#
- 1...Be7
- 2.f8S#
- 1...Bg7
- 2.Rd6#
- 2.f8S#
- 1...Sf1
- 2.Bf5#
- 1...Sh1
- 2.Bf5#
- 1...Se2
- 2.Bf5#
- 1...Se4
- 2.Bf5#
- 1...Sf5
- 2.Bxf5#
- 1...b2!
- 1...Bxc5
- 1.Bf4?
- 1...Bxc5
- 2.f8S#
- 1...Sxh5
- 2.Bf5#
- 1...Be7
- 2.f8S#
- 1...Bg7
- 2.f8S#
- 1...Sf1
- 2.Bf5#
- 1...Sh1
- 2.Bf5#
- 1...Se2
- 2.Bf5#
- 1...Se4
- 2.Bf5#
- 1...Sf5
- 2.Bxf5#
- 1...Bd6!
- 1...Bxc5
- 1.Be5?
- 1...Bxc5
- 2.f8S#
- 1...Sxh5
- 2.Bf5#
- 1...Be7
- 2.f8S#
- 1...Bg7
- 2.f8S#
- 1...Sf1
- 2.Bf5#
- 1...Sh1
- 2.Bf5#
- 1...Se2
- 2.Bf5#
- 1...Se4
- 2.Bf5#
- 1...Sf5
- 2.Bxf5#
- 1...Bd6!
- 1...Bxc5
- 1.Rg7?
- 1...Bxc5
- 2.f8S#
- 1...Sxh5
- 2.Bf5#
- 1...Bd6
- 2.Rxd6#
- 1...Be7
- 2.f8S#
- 1...Sf1
- 2.Bf5#
- 1...Sh1
- 2.Bf5#
- 1...Se2
- 2.Bf5#
- 1...Se4
- 2.Bf5#
- 1...Sf5
- 2.Bxf5#
- 1...Bxg7!
- 1...Bxc5
- 1.Ka1?
- Keys
- 1.Rh8!
- 1...Bxc5
- 2.Rd8#
- 1...Sxh5
- 2.Bf5#
- 1...Bd6
- 2.Rxd6#
- 1...Be7
- 2.Se5#
- 1...Bg7
- 2.Rd8#
- 1...Sf1
- 2.Bf5#
- 1...Sh1
- 2.Bf5#
- 1...Se2
- 2.Bf5#
- 1...Se4
- 2.Bf5#
- 1...Sf5
- 2.Bxf5#
- 1...Bxc5
- 1.Rh8!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 3
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(f);OGATE,XP(C)::P=S
- B(f);N_GUARD::R1(F),XB(f)
- B(f);OGATE::P=S
- B(f);OGATE,P_PINR(F)::P=S
- S(b);N_GUARD::B(G)
- S(b);N_GUARD::B(G),XS(b)
- S(b);N_GUARD,XP(D)::B(G)
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- B(f);OGATE,XP(C)::P=S
- S(b);N_GUARD,XP(D)::B(G)
- B(f);N_GUARD::R1(F),XB(f)
- B(f);OGATE::P=S
- B(f);OGATE,P_PINR(F)::P=S
- S(b);N_GUARD::B(G)
- S(b);N_GUARD::B(G),XS(b)
- Refutation
- P(a);CHECK
- Try
- K(A);P-FLIGHT
- Vars
- B(f);OGATE,XP(C)::P=S
- S(b);N_GUARD,XP(D)::B(G)
- B(f);N_GUARD::R1(F),XB(f)
- B(f);OGATE::P=S
- S(b);N_GUARD::B(G)
- S(b);N_GUARD::B(G),XS(b)
- Refutation
- P(a);
- Try
- B(K);
- Vars
- B(f);OGATE,XP(C)::P=S
- S(b);N_GUARD,XP(D)::B(G)
- B(f);OGATE::P=S
- B(f);OGATE,P_PINR(F)::P=S
- S(b);N_GUARD::B(G)
- S(b);N_GUARD::B(G),XS(b)
- Refutation
- B(f);
- Try
- B(K);
- Vars
- B(f);OGATE,XP(C)::P=S
- S(b);N_GUARD,XP(D)::B(G)
- B(f);OGATE::P=S
- S(b);N_GUARD::B(G)
- S(b);N_GUARD::B(G),XS(b)
- Refutation
- B(f);
- Try
- R(J);
- Vars
- B(f);OGATE,XP(C)::P=S
- S(b);N_GUARD,XP(D)::B(G)
- B(f);N_GUARD::R1(F),XB(f)
- B(f);OGATE::P=S
- S(b);N_GUARD::B(G)
- S(b);N_GUARD::B(G),XS(b)
- Refutation
- B(f);P_PINR(F),XR(J)
- Try
- Actual
- R(J);
- Vars
- B(f);OGATE,XP(C)::R1(J)
- S(b);N_GUARD,XP(D)::B(G)
- B(f);N_GUARD::R1(F),XB(f)
- B(f);SBLOCK::S(E)
- B(f);OGATE,P_PINR(F)::R1(J)
- S(b);N_GUARD::B(G)
- S(b);N_GUARD::B(G),XS(b)
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).