MESON Chess Problem Database
Problem Display
PID: 51339 (2R3K1/4B3/2np2N1/P2k1P2/1pn1p1p1/1p6/1P2N2Q/2R4B w - - 0 1)
Sumner, Christopher Richard Benson
Manchester Guardian, 1957
#2
11 + 8
SOLUTION
- SOUND
- Sets
- 1...Kc5
- 2.Qe5#
- 1...Sxb2
- 2.Qxd6#
- 1...Sd2
- 2.Qxd6#
- 1...Sa3
- 2.Qxd6#
- 1...Se3
- 2.Qxd6#
- 1...S4xa5
- 2.Qxd6#
- 1...S4e5
- 2.Sgf4#
- 1...Sb6
- 2.Qxd6#
- 1...Sd4
- 2.Sef4#
- 1...S6e5
- 2.Sgf4#
- 1...Sxe7+
- 2.Sxe7#
- 1...Kc5
- Tries
- 1.Bxe4+?
- 1...Kc5
- 2.Qe5#
- 1...Kxe4!
- 1...Kc5
- 1.Bf8?
- 1...Se7+
- 2.Sxe7#
- 1...Kc5
- 2.Qe5#
- 1...Sxb2
- 2.Qxd6#
- 1...S4xa5
- 2.Qxd6#
- 1...S6xa5
- 2.Se7#
- 1...Sa7
- 2.Se7#
- 1...Sd2
- 2.Qxd6#
- 1...Sa3
- 2.Qxd6#
- 1...Se3
- 2.Qxd6#
- 1...S4e5
- 2.Sgf4#
- 1...Sb6
- 2.Qxd6#
- 1...Sd4
- 2.Sef4#
- 2.Se7#
- 1...S6e5
- 2.Sgf4#
- 2.Se7#
- 1...Sb8
- 2.Se7#
- 1...Sd8
- 2.Se7#
- 1...g3!
- 1...Se7+
- 1.Qf4?
- 1...Sxe7+
- 2.Sxe7#
- 1...Kc5
- 2.Qe5#
- 1...Sxb2
- 2.Bxe4#
- 2.Qxd6#
- 2.Qxe4#
- 1...S4xa5
- 2.Bxe4#
- 2.Qxd6#
- 2.Qxe4#
- 1...S6xa5
- 2.Bxe4#
- 2.Qxe4#
- 1...Sa7
- 2.Bxe4#
- 2.Qxe4#
- 1...Sd2
- 2.Qxd6#
- 1...Sa3
- 2.Bxe4#
- 2.Qxd6#
- 2.Qxe4#
- 1...Se3
- 2.Bxe4#
- 2.Qxd6#
- 2.Qxe4#
- 1...S4e5
- 2.Bxe4#
- 2.Qxe4#
- 1...Sb6
- 2.Bxe4#
- 2.Qxd6#
- 2.Qxe4#
- 1...Sd4
- 2.Bxe4#
- 2.Qxe4#
- 1...S6e5
- 2.Bxe4#
- 2.Qxe4#
- 1...Sb8
- 2.Bxe4#
- 2.Qxe4#
- 1...Sd8
- 2.Bxe4#
- 2.Qxe4#
- 1...g3!
- 1...Sxe7+
- 1.Qe5+?
- 1...S4xe5
- 2.Sgf4#
- 1...S6xe5
- 2.Sgf4#
- 1...dxe5!
- 1...S4xe5
- 1.Qh8?
- 1...Sxe7+
- 2.Sxe7#
- 1...Kc5
- 2.Qe5#
- 1...Sxb2
- 2.Sef4#
- 2.Sgf4#
- 1...S4xa5
- 2.Sef4#
- 2.Sgf4#
- 1...S6xa5
- 2.Sef4#
- 2.Sgf4#
- 2.Qd4#
- 1...Sa7
- 2.Sef4#
- 2.Sgf4#
- 2.Qd4#
- 1...Sd2
- 2.Sef4#
- 2.Sgf4#
- 1...Sa3
- 2.Sef4#
- 2.Sgf4#
- 1...Se3
- 2.Sef4#
- 2.Sgf4#
- 1...S4e5
- 2.Sgf4#
- 1...Sb6
- 2.Sef4#
- 2.Sgf4#
- 1...Sd4
- 2.Sef4#
- 2.Sgf4#
- 2.Qxd4#
- 1...S6e5
- 2.Sgf4#
- 1...Sb8
- 2.Sef4#
- 2.Sgf4#
- 2.Qd4#
- 1...Sd8
- 2.Sef4#
- 2.Sgf4#
- 2.Qd4#
- 1...g3!
- 1...Sxe7+
- 1.Bxe4+?
- Keys
- 1.Qg3!
- 1...Sxe7+
- 2.Sxe7#
- 1...Kc5
- 2.Qe5#
- 1...Sxb2
- 2.Qxd6#
- 1...S4xa5
- 2.Qxd6#
- 1...S6xa5
- 2.Qd3#
- 1...Sa7
- 2.Qd3#
- 1...Sd2
- 2.Qxd6#
- 1...Sa3
- 2.Qxd6#
- 1...Se3
- 2.Qxd6#
- 1...S4e5
- 2.Sgf4#
- 1...Sb6
- 2.Qxd6#
- 1...Sd4
- 2.Sef4#
- 1...S6e5
- 2.Sgf4#
- 1...Sb8
- 2.Qd3#
- 1...Sd8
- 2.Qd3#
- 1...Sxe7+
- 1.Qg3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- K(f);N_SPINP(d),P-FLIGHT,P_SPINP(h),P_SPINS(c)::QAR2(E)
- S(c);N_GUARD,XP(C)::QAR1(E),XP(h)
- S(c);N_GUARD::QAR1(E),XP(h)
- S(c);N_GUARD,XP(F)::QAR1(E),XP(h)
- S(c);SBLOCK::S(H)
- S(g);SBLOCK::S(D)
- S(g);SBLOCK::S(H)
- S(g);CHECK,XB(I)::S(H),XS(g)
- Tries
- Try
- B(B);CHECK,XP(d)
- Vars
- K(f);P-FLIGHT,P_SPINP(h),P_SPINS(c)::QAR2(E)
- Refutation
- K(f);S_FLIGHT,XB(B)
- Try
- B(I);
- Vars
- S(g);CHECK,N_GUARD::S(H),XS(g)
- K(f);N_SPINP(d),P-FLIGHT,P_SPINP(h),P_SPINS(c)::QAR2(E)
- S(c);N_GUARD,XP(C)::QAR1(E),XP(h)
- S(c);N_GUARD,XP(F)::QAR1(E),XP(h)
- S(g);N_GUARD,XP(F)::S(H)
- S(g);N_GUARD::S(H)
- S(c);N_GUARD::QAR1(E),XP(h)
- S(c);SBLOCK::S(H)
- Refutation
- P(e);
- Try
- Q(E);
- Vars
- S(g);CHECK,XB(I)::S(H),XS(g)
- K(f);N_SPINP(d),P-FLIGHT,P_SPINP(h),P_SPINS(c)::QAR2(E)
- S(c);N_GUARD::QAR1(E),XP(h)
- Refutation
- P(e);
- Try
- Q(E);CHECK
- Vars
- S(c);SBLOCK,XQ(E)::S(H)
- S(g);SBLOCK,XQ(E)::S(H)
- Refutation
- P(h);XQ(E)
- Try
- Q(E);
- Vars
- S(g);CHECK,XB(I)::S(H),XS(g)
- K(f);N_SPINP(d),P-FLIGHT,P_SPINP(h),P_SPINS(c)::QAR2(E)
- S(c);::S(H)
- S(g);::S(H)
- Refutation
- P(e);
- Try
- Actual
- Q(E);
- Vars
- S(g);CHECK,XB(I)::S(H),XS(g)
- K(f);N_SPINP(d),P-FLIGHT,P_SPINP(h),P_SPINS(c)::QAR2(E)
- S(c);N_GUARD,XP(C)::QAR1(E),XP(h)
- S(c);N_GUARD,XP(F)::QAR1(E),XP(h)
- S(g);N_GUARD,XP(F)::QAR2(E)
- S(g);N_GUARD::QAR2(E)
- S(c);N_GUARD::QAR1(E),XP(h)
- S(c);SBLOCK::S(H)
- S(g);SBLOCK::S(D)
- S(g);SBLOCK::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).