MESON Chess Problem Database
Problem Display
PID: 251636 (1BR5/1p6/1P3p2/5B2/2Pk4/1p2N1rp/R5nQ/3N1n1K w - - 0 1)
Moen, Kabe
The Problemist, 2021
#2
10 + 8
SOLUTION
- SOUND
- Sets
- 1...Rxe3
- 2.Qd6#
- 1...Rf3
- 2.Qd6#
- 1...Rg4
- 2.Qd6#
- 1...Rg5
- 2.Qd6#
- 1...Rg6
- 2.Qd6#
- 1...Rg7
- 2.Qd6#
- 1...Rg8
- 2.Qd6#
- 1...Sd2
- 2.Rxd2#
- 1...Sxh2
- 2.Rd2#
- 1...Sfxe3
- 2.Rd2#
- 1...Se1
- 2.Qb2#
- 1...Sgxe3
- 2.Qb2#
- 1...Sf4
- 2.Qb2#
- 1...Sh4
- 2.Qb2#
- 1...bxa2
- 2.Sc2#
- 1...b2
- 2.Sc2#
- 1...Rxe3
- Tries
- 1.Bb1?
- threat
- 2.Sf5#
- 1...Rxe3
- 2.Qd6#
- 1...Sfxe3
- 2.Rd2#
- 1...Sgxe3
- 2.Qb2#
- 1...Rf3
- 2.Qd6#
- 1...Sh4
- 2.Qb2#
- 1...f5
- 2.Sxf5#
- 1...Rg5!
- threat
- 1.Bxg3?
- 1...Sxh2
- 2.Rd2#
- 1...Sfxe3
- 2.Rd2#
- 1...Sgxe3
- 2.Qb2#
- 1...bxa2
- 2.Sc2#
- 1...Sf4
- 2.Qb2#
- 1...Sd2
- 2.Rxd2#
- 1...Se1
- 2.Qb2#
- 1...Sh4
- 2.Qb2#
- 1...b2
- 2.Sc2#
- 1...Sxg3+!
- 1...Sxh2
- 1.Bd6?
- 1...Sxh2
- 2.Rd2#
- 1...Sfxe3
- 2.Rd2#
- 1...Sgxe3
- 2.Qb2#
- 1...bxa2
- 2.Sc2#
- 1...Rf3
- 2.Bc5#
- 1...Rg4
- 2.Bc5#
- 1...Rg5
- 2.Bc5#
- 1...Rg6
- 2.Bc5#
- 1...Rg7
- 2.Bc5#
- 1...Rg8
- 2.Bc5#
- 1...Sd2
- 2.Rxd2#
- 1...Se1
- 2.Qb2#
- 1...Sf4
- 2.Qb2#
- 1...Sh4
- 2.Qb2#
- 1...b2
- 2.Sc2#
- 1...Rxe3!
- 1...Sxh2
- 1.Rxg2?
- 1...Rxg2
- 2.Qf4#
- 2.Qd6#
- 1...Rxe3
- 2.Qd6#
- 1...Sxh2
- 2.Rd2#
- 1...Sxe3
- 2.Rd2#
- 1...Rf3
- 2.Qd6#
- 1...Rg4
- 2.Rxg4#
- 2.Qd6#
- 1...Rg5
- 2.Qf4#
- 2.Qd6#
- 1...Rg6
- 2.Qf4#
- 2.Qd6#
- 1...Rg7
- 2.Qf4#
- 2.Qd6#
- 1...Rg8
- 2.Qf4#
- 2.Qd6#
- 1...Sd2
- 2.Rxd2#
- 1...b2
- 2.Sc2#
- 1...hxg2+!
- 1...Rxg2
- 1.Ra5?
- threat
- 2.Rd5#
- 2.Rd8#
- 1...Rxe3
- 2.Rd5#
- 2.Qd6#
- 1...Sgxe3
- 2.Qb2#
- 1...Rg7
- 2.Rd5#
- 2.Qd6#
- 1...Rg8
- 2.Rd5#
- 2.Qd6#
- 1...Sf4
- 2.Qb2#
- 1...Sfxe3!
- threat
- 1.Rc6?
- 1...Rxe3
- 2.Qd6#
- 1...Sxh2
- 2.Rd2#
- 1...Sfxe3
- 2.Rd2#
- 1...Sgxe3
- 2.Qb2#
- 1...bxa2
- 2.Sc2#
- 1...Se1
- 2.Qb2#
- 1...Rf3
- 2.Qd6#
- 1...Rg4
- 2.Qd6#
- 1...Rg5
- 2.Qd6#
- 1...Rg6
- 2.Qd6#
- 1...Rg7
- 2.Qd6#
- 1...Rg8
- 2.Qd6#
- 1...Sd2
- 2.Rxd2#
- 1...Sf4
- 2.Qb2#
- 1...Sh4
- 2.Qb2#
- 1...b2
- 2.Sc2#
- 1...bxc6!
- 1...Rxe3
- 1.Qxg3?
- threat
- 2.Qd6#
- 1...Sfxe3
- 2.Rd2#
- 1...Sgxe3
- 2.Qf4#
- 1...Sf4
- 2.Qxf4#
- 1...Sxg3+!
- threat
- 1.Bb1?
- Keys
- 1.Rf2!
- 1...Rxe3
- 2.Qd6#
- 1...Sxh2
- 2.Rd2#
- 1...Sfxe3
- 2.Rd2#
- 1...Sgxe3
- 2.Rf4#
- 1...Se1
- 2.Rf4#
- 1...Rf3
- 2.Qd6#
- 1...Rg4
- 2.Qd6#
- 1...Rg5
- 2.Qd6#
- 1...Rg6
- 2.Qd6#
- 1...Rg7
- 2.Qd6#
- 1...Rg8
- 2.Qd6#
- 1...Sd2
- 2.Rxd2#
- 1...Sf4
- 2.Rxf4#
- 1...Sh4
- 2.Rf4#
- 1...b2
- 2.Sc2#
- 1...Rxe3
- 1.Rf2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- R(d);OGATE,XS(E)::QAR2(D)
- R(d);OGATE::QAR2(D)
- S(a);N_GUARD::R(C),XS(a)
- S(a);N_GUARD,XQ(D)::R(C)
- S(a);N_GUARD,XS(E)::R(C)
- S(b);OGATE::QAB(D)
- S(b);OGATE,XS(E)::QAB(D)
- P(c);N_GUARD,XR(C)::S(E)
- P(c);N_GUARD::S(E)
- Tries
- Try
- B(G);
- Threat
- S(E)
- Vars
- R(d);OGATE,XS(E)::QAR2(D)
- S(a);N_GUARD,XS(E)::R(C)
- S(b);OGATE,XS(E)::QAB(D)
- R(d);OGATE::QAR2(D)
- S(b);OGATE::QAB(D)
- P(g);::S(E),XP(g)
- Refutation
- R(d);
- Try
- B(I);XR(d)
- Vars
- S(a);N_GUARD,XQ(D)::R(C)
- S(a);N_GUARD,XS(E)::R(C)
- S(b);OGATE,XS(E)::QAB(D)
- P(c);N_GUARD,XR(C)::S(E)
- S(b);OGATE::QAB(D)
- S(a);N_GUARD::R(C),XS(a)
- P(c);N_GUARD::S(E)
- Refutation
- S(a);CHECK,XB(I)
- Try
- B(I);
- Vars
- S(a);N_GUARD,XQ(D)::R(C)
- S(a);N_GUARD,XS(E)::R(C)
- S(b);OGATE,XS(E)::QAB(D)
- P(c);N_GUARD,XR(C)::S(E)
- R(d);::B(I)
- S(a);N_GUARD::R(C),XS(a)
- S(b);OGATE::QAB(D)
- P(c);N_GUARD::S(E)
- Refutation
- R(d);XS(E)
- Try
- R(C);XS(b)
- Vars
- R(d);OGATE,XS(E)::QAR2(D)
- S(a);N_GUARD,XQ(D)::R(C)
- S(a);N_GUARD,XS(E)::R(C)
- R(d);OGATE::QAR2(D)
- S(a);N_GUARD::R(C),XS(a)
- P(c);N_GUARD::S(E)
- Refutation
- P(e);CHECK,XR(C)
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- S(b);OGATE,XS(E)::QAB(D)
- S(b);OGATE::QAB(D)
- Refutation
- S(a);XS(E)
- Try
- R(J);
- Vars
- R(d);OGATE,XS(E)::QAR2(D)
- S(a);N_GUARD,XQ(D)::R(C)
- S(a);N_GUARD,XS(E)::R(C)
- S(b);OGATE,XS(E)::QAB(D)
- P(c);N_GUARD,XR(C)::S(E)
- S(b);OGATE::QAB(D)
- R(d);OGATE::QAR2(D)
- S(a);N_GUARD::R(C),XS(a)
- P(c);N_GUARD::S(E)
- Refutation
- P(h);XR(J)
- Try
- Q(D);XR(d)
- Threat
- QAR2(D)
- Vars
- S(a);N_GUARD,XS(E)::R(C)
- S(b);N_GUARD,XS(E)::QAR2(D)
- S(b);N_GUARD::QAR2(D),XS(b)
- Refutation
- S(a);CHECK,XQ(D)
- Try
- Actual
- R(C);
- Vars
- R(d);OGATE,XS(E)::QAR2(D)
- S(a);N_GUARD,XQ(D)::R(C)
- S(a);N_GUARD,XS(E)::R(C)
- S(b);N_GUARD,XS(E)::R(C)
- S(b);N_GUARD::R(C)
- R(d);OGATE::QAR2(D)
- S(a);N_GUARD::R(C),XS(a)
- S(b);N_GUARD::R(C),XS(b)
- P(c);N_GUARD::S(E)
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).