MESON Chess Problem Database
Problem Display
PID: 11069 (2B5/4p2p/6bN/1nKPp1B1/4k1p1/4pqR1/2P3Qn/1N6 w - - 0 1)
Pickering, SA
Chess, 1936
#2
9 + 10
SOLUTION
- SOUND
- Sets
- 1...Qxg2
- 2.Rxe3#
- 1...Bf5
- 2.Bxf5#
- 1...Bh5
- 2.Bf5#
- 1...Bf7
- 2.Bf5#
- 1...Be8
- 2.Bf5#
- 1...Sf1
- 2.Rxg4#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sd4
- 2.Sc3#
- 1...Sd6
- 2.Sc3#
- 1...Sa7
- 2.Sc3#
- 1...Sc7
- 2.Sc3#
- 1...e2
- 2.Sd2#
- 1...Qxg2
- Tries
- 1.Bxg4?
- 1...Qxg2
- 2.Rxe3#
- 1...Sxg4
- 2.Rxg4#
- 2.Qxf3#
- 1...Bf5
- 2.Bxf5#
- 1...Bh5
- 2.Bf5#
- 1...Bf7
- 2.Bf5#
- 1...Be8
- 2.Bf5#
- 1...Sf1
- 2.Bxf3#
- 2.Qxf3#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sd4
- 2.Sc3#
- 1...Sd6
- 2.Sc3#
- 1...Sa7
- 2.Sc3#
- 1...Sc7
- 2.Sc3#
- 1...e2
- 2.Sd2#
- 1...e6!
- 1...Qxg2
- 1.Bd7?
- 1...Qxg2
- 2.Rxe3#
- 1...Bf5
- 2.Bxf5#
- 1...Bh5
- 2.Bf5#
- 1...Bf7
- 2.Bf5#
- 1...Be8
- 2.Bf5#
- 1...Sf1
- 2.Rxg4#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sd4
- 2.Sc3#
- 1...Sd6
- 2.Sc3#
- 1...Sa7
- 2.Sc3#
- 1...Sc7
- 2.Sc3#
- 1...e2
- 2.Sd2#
- 1...e6!
- 1...Qxg2
- 1.Rxf3?
- threat
- 2.Rxe3#
- 2.Rf4#
- 1...Sxf3
- 2.Qxg4#
- 1...e2
- 2.Sd2#
- 2.Re3#
- 2.Qxe2#
- 1...gxf3!
- threat
- 1.Qh1?
- 1...Qxh1
- 2.Rxe3#
- 1...Bf5
- 2.Bxf5#
- 1...Qg2
- 2.Rxe3#
- 1...Bh5
- 2.Bf5#
- 1...Bf7
- 2.Bf5#
- 1...Be8
- 2.Bf5#
- 1...Sf1
- 2.Rxg4#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sd4
- 2.Sc3#
- 1...Sd6
- 2.Sc3#
- 1...Sa7
- 2.Sc3#
- 1...Sc7
- 2.Sc3#
- 1...e2
- 2.Sd2#
- 1...e6!
- 1...Qxh1
- 1.Qxf3+?
- 1...Sxf3
- 2.Rxg4#
- 1...gxf3!
- 1...Sxf3
- 1.Qe2?
- threat
- 2.Sd2#
- 2.Qd3#
- 1...Qxg3
- 2.Sd2#
- 1...Qf1
- 2.Sd2#
- 2.Rxe3#
- 2.Qxe3#
- 1...Sf1
- 2.Qd3#
- 1...Qxe2!
- threat
- 1.d6?
- threat
- 2.Bb7#
- 1...Sxd6
- 2.Sc3#
- 1...Bf7
- 2.Bf5#
- 1...Be8
- 2.Bf5#
- 1...Sc3
- 2.Sxc3#
- 1...Sd4
- 2.Sc3#
- 1...Sa7
- 2.Sc3#
- 1...Sc7
- 2.Sc3#
- 1...exd6+!
- threat
- 1.Bxg4?
- Keys
- 1.Be6!
- 1...Qxg2
- 2.Rxe3#
- 1...Bf5
- 2.Bxf5#
- 1...Bh5
- 2.Bf5#
- 1...Bf7
- 2.Bf5#
- 1...Be8
- 2.Bf5#
- 1...Sf1
- 2.Rxg4#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sd4
- 2.Sc3#
- 1...Sd6
- 2.Sc3#
- 1...Sa7
- 2.Sc3#
- 1...Sc7
- 2.Sc3#
- 1...e2
- 2.Sd2#
- 1...Qxg2
- 1.Be6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- Q(c);N_SPINQ(c),OGATE,XQ(C)::R1(D),XP(b)
- B(h);N_GUARD::B(I),XB(h)
- B(h);N_GUARD::B(I)
- S(a);N_GUARD::R(D),XP(e)
- S(f);N_GUARD::S(A)
- S(f);N_GUARD::S(A),XS(f)
- P(b);N_GUARD::S(A)
- Tries
- Try
- B(I);XP(e)
- Vars
- Q(c);N_SPINQ(c),OGATE,XQ(C)::R1(D),XP(b)
- B(h);N_GUARD::B(I),XB(h)
- B(h);N_GUARD::B(I)
- S(f);N_GUARD::S(A)
- S(f);N_GUARD::S(A),XS(f)
- P(b);N_GUARD::S(A)
- Refutation
- P(i);
- Try
- B(I);
- Vars
- Q(c);N_SPINQ(c),OGATE,XQ(C)::R1(D),XP(b)
- B(h);N_GUARD::B(I),XB(h)
- B(h);N_GUARD::B(I)
- S(a);N_GUARD::R(D),XP(e)
- S(f);N_GUARD::S(A)
- S(f);N_GUARD::S(A),XS(f)
- P(b);N_GUARD::S(A)
- Refutation
- P(i);
- Try
- R(D);XQ(c)
- Threat
- DUALS(2)
- Vars
- S(a);N_GUARD,P_SPINS(a),XR(D)::QAR2(C),XP(e)
- Refutation
- P(e);P_SPINP(e),XR(D)
- Try
- Q(C);
- Vars
- Q(c);N_SPINQ(c),OGATE,XQ(C)::R1(D),XP(b)
- B(h);N_GUARD::B(I),XB(h)
- Q(c);OGATE::R1(D),XP(b)
- B(h);N_GUARD::B(I)
- S(a);N_GUARD::R(D),XP(e)
- S(f);N_GUARD::S(A)
- S(f);N_GUARD::S(A),XS(f)
- P(b);N_GUARD::S(A)
- Refutation
- P(i);
- Try
- Q(C);CHECK,XQ(c)
- Vars
- S(a);SBLOCK,XQ(C)::R(D),XP(e)
- Refutation
- P(e);XQ(C)
- Try
- Q(C);N_PINQ(c),P_PINP(b)
- Threat
- DUALS(2)
- Vars
- Q(c);XR(D)::S(A)
- S(a);::QAB1(C)
- Refutation
- Q(c);N_SPINP(b),XQ(C)
- Try
- P(F);
- Threat
- B(I)
- Vars
- S(f);N_GUARD,XP(F)::S(A)
- B(h);N_GUARD::B(I)
- S(f);N_GUARD::S(A),XS(f)
- S(f);N_GUARD::S(A)
- Refutation
- P(i);CHECK,XP(F)
- Try
- Actual
- B(I);
- Vars
- Q(c);N_SPINQ(c),OGATE,XQ(C)::R1(D),XP(b)
- B(h);N_GUARD::B(I),XB(h)
- B(h);N_GUARD::B(I)
- S(a);N_GUARD::R(D),XP(e)
- S(f);N_GUARD::S(A)
- S(f);N_GUARD::S(A),XS(f)
- P(b);N_GUARD::S(A)
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).