MESON Chess Problem Database
Problem Display
PID: 56424 (1Bb2R2/r1p1nprN/3Pk1N1/PQ1R3P/8/7K/B2P2n1/8 w - - 0 1)
Reeves, Alfred Christopher
Problem Observer, 2005
#2
12 + 8
SOLUTION
- SOUND
- Sets
- 1...Se1
- 2.Sf4#
- 1...Se3
- 2.Sf4#
- 1...Sf4+
- 2.Sxf4#
- 1...Sh4
- 2.Sf4#
- 1...Sf5
- 2.Rd3#
- 2.Rd4#
- 1...Sxg6
- 2.Rd3#
- 2.Rd4#
- 1...Sg8
- 2.Rd3#
- 2.Rd4#
- 1...cxd6
- 2.Re5#
- 2.Rxd6#
- 1...c5
- 2.Re5#
- 1...fxg6
- 2.Sg5#
- 2.Rf6#
- 1...f5
- 2.Sg5#
- 2.Rf6#
- 1...f6
- 2.Rxf6#
- 1...Se1
- Tries
- 1.Rf5+?
- 1...Sd5
- 2.Rf6#
- 1...Kxd6!
- 1...Sd5
- 1.Rd8?
- threat
- 2.Sgf8#
- 2.Re5#
- 1...Sf4+
- 2.Sxf4#
- 1...Rxg6
- 2.Re5#
- 1...Sxd5
- 2.Qxd5#
- 1...Sxg6
- 2.Rd3#
- 2.Rd4#
- 2.Rc5#
- 2.Re5#
- 2.Rf5#
- 2.Rg5#
- 1...fxg6
- 2.Re5#
- 1...f5
- 2.Re5#
- 1...f6
- 2.Re5#
- 1...Rg8
- 2.Re5#
- 1...Bd7
- 2.Sgf8#
- 2.Qxd7#
- 1...Rxh7!
- threat
- 1.Re8?
- threat
- 2.Sgf8#
- 2.Rd3#
- 2.Rd4#
- 2.Rxe7#
- 1...Sf4+
- 2.Sxf4#
- 1...Rxa5
- 2.Sgf8#
- 2.Rxe7#
- 1...Rxg6
- 2.Rd3#
- 2.Rd4#
- 2.Rxe7#
- 1...cxd6
- 2.Sgf8#
- 2.Re5#
- 2.Rxd6#
- 1...fxg6
- 2.Rd3#
- 2.Rd4#
- 1...c6
- 2.Sgf8#
- 1...f5
- 2.Rd3#
- 2.Rd4#
- 1...f6
- 2.Rd3#
- 2.Rd4#
- 1...Rg8
- 2.Rd3#
- 2.Rd4#
- 2.Rxe7#
- 1...Bb7
- 2.Sgf8#
- 2.Rxe7#
- 1...Se3
- 2.Sf4#
- 2.Sgf8#
- 2.Rxe7#
- 1...c5
- 2.Sgf8#
- 2.Rxc5#
- 2.Re5#
- 1...Rxh7!
- threat
- 1.dxe7?
- threat
- 2.Rd3#
- 2.Rd4#
- 2.Rd7#
- 2.Rdd8#
- 2.Qc6#
- 2.e8Q#
- 2.e8R#
- 1...Rxa5
- 2.Qc6#
- 2.e8Q#
- 2.e8R#
- 1...Rxg6
- 2.Rd7#
- 2.e8Q#
- 2.e8R#
- 1...Rxh7
- 2.Qc6#
- 1...fxg6
- 2.Rd7#
- 1...Ra6
- 2.Rd3#
- 2.Rd4#
- 2.Rd7#
- 2.Rdd8#
- 2.e8Q#
- 2.e8R#
- 1...Rb7
- 2.Rd3#
- 2.Rd4#
- 2.Rd7#
- 2.Rdd8#
- 2.Qc6#
- 2.e8Q#
- 2.e8R#
- 1...Ra8
- 2.Rd3#
- 2.Rd4#
- 2.Rd7#
- 2.Rdd8#
- 2.Qc6#
- 2.e8Q#
- 2.e8R#
- 1...Rg8
- 2.Rd3#
- 2.Rd4#
- 2.Rd7#
- 2.Rdd8#
- 2.Qc6#
- 2.e8Q#
- 2.e8R#
- 1...Ba6
- 2.Rd3#
- 2.Rd4#
- 2.Rd7#
- 2.Rdd8#
- 2.Qc6#
- 2.Qd7#
- 2.e8Q#
- 2.e8R#
- 1...Bb7
- 2.Qd7#
- 2.e8Q#
- 2.e8R#
- 1...Bd7
- 2.Rd3#
- 2.Rd4#
- 2.Rxd7#
- 2.Qxd7#
- 1...Se1
- 2.Rd3#
- 2.Rd4#
- 2.Rd7#
- 2.Rdd8#
- 2.Qe2#
- 2.Qc6#
- 2.e8Q#
- 2.e8R#
- 1...Se3
- 2.Qc6#
- 2.e8Q#
- 2.e8R#
- 1...Sh4
- 2.Rd3#
- 2.Rd4#
- 2.Rd7#
- 2.Rdd8#
- 2.Qe2#
- 2.Qc6#
- 2.e8Q#
- 2.e8R#
- 1...c5
- 2.Rxc5#
- 2.Re5#
- 2.Qc6#
- 2.Qb6#
- 1...c6
- 2.Rd3#
- 2.Rd4#
- 2.Rd6#
- 2.Rdd8#
- 2.Qxc6#
- 1...f5
- 2.Sg5#
- 2.Rd3#
- 2.Rd4#
- 2.Rd7#
- 2.Rdd8#
- 2.Rf6#
- 2.Qc6#
- 1...f6
- 2.Rd3#
- 2.Rd4#
- 2.Rd7#
- 2.Rdd8#
- 2.Rxf6#
- 2.Qc6#
- 1...Sf4+!
- threat
- 1.Rf5+?
- Keys
- 1.Qe8!
- threat
- 2.Qxe7#
- 1...Sf4+
- 2.Sxf4#
- 1...cxd6
- 2.Re5#
- 1...fxg6
- 2.Sg5#
- 2.Rf6#
- 1...c5
- 2.Rxc5#
- 2.Re5#
- 1...c6
- 2.Rb5#
- 2.Rc5#
- 2.Re5#
- 2.Rg5#
- 1...f5
- 2.Sg5#
- 2.Rd3#
- 2.Rd4#
- 2.Rf6#
- 1...f6
- 2.Rxf6#
- threat
- 1.Qe8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- S(a);N_GUARD::S(I)
- S(a);CHECK,N_GUARD::S(I),XS(a)
- P(d);::B(A)+R(F),DCHECK
- P(f);OGATE::R1(L),XP(f)
- Tries
- Try
- R(F);CHECK
- Vars
- S(e);P_SPINS(e)::R1(F)
- Refutation
- K(b);P-FLIGHT,P_PINR(F),P_SPINP(d),XP(H)
- Try
- R(L);
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,N_GUARD::S(I),XS(a)
- R(g);XS(I)::B(A)+R(F),DCHECK
- S(e);OGATE,P_SPINS(e),XR(F)::QAB1(E),XS(e)
- P(f);XS(I)::B(A)+R(F),DCHECK
- P(f);::B(A)+R(F),DCHECK
- R(g);::B(A)+R(F),DCHECK
- Refutation
- R(g);P_PINP(G),XS(J)
- Try
- R(L);P_PINS(e)
- Threat
- DUALS(4)
- Vars
- S(a);CHECK,N_GUARD::S(I),XS(a)
- P(d);::S(I)
- Refutation
- R(g);P_PINP(G),XS(J)
- Try
- P(H);XS(e)
- Threat
- DUALS(7)
- Vars
- R(g);P_PINP(G),XS(J)::QAR2(E)
- P(f);XS(I)::B(A)+R(F)
- Refutation
- S(a);CHECK
- Try
- Actual
- Q(E);P_PINS(e)
- Threat
- QAR1(E),XS(e)
- Vars
- S(a);CHECK,N_GUARD::S(I),XS(a)
- P(d);XP(H)::B(A)+R(F),DCHECK
- P(f);OGATE::R1(L),XP(f)
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).