MESON Chess Problem Database

Problem Display
PID: 159337 (8/Q1B1n1p1/4P1R1/2p2Pp1/np1k4/1B3KN1/2R1p3/3bN3 w - - 0 1)

Andrew, Frederick William

Brighton Society, 1898

(First published on Sat Apr 30 1898)

8/Q1B1n1p1/4P1R1/2p2Pp1/np1k4/1B3KN1/2R1p3/3bN3

#2

10 + 9

15351 SCPF/BCPS Black Books 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc2
      • 2.Sxe2#
    • 1...Sb2
      • 2.Qxc5#
    • 1...Sc3
      • 2.Rd2#
    • 1...Sb6
      • 2.Qa1#
    • 1...Sd5
      • 2.Rc4#
    • 1...Sxf5
      • 2.Sxf5#
    • 1...g4+
      • 2.Rxg4#
  • Tries
    • 1.Rxg5?
      • threat
        • 2.Rg4#
      • 1...Bxc2
        • 2.Sxe2#
      • 1...Sc3
        • 2.Rd2#
      • 1...Sd5
        • 2.Rc4#
      • 1...Sg6!
    • 1.Rxg7?
      • 1...g4+
        • 2.Rxg4#
      • 1...Bxc2
        • 2.Sxe2#
      • 1...Sxf5
        • 2.Sxf5#
      • 1...Sb2
        • 2.Qxc5#
      • 1...Sc3
        • 2.Rd2#
      • 1...Sb6
        • 2.Qa1#
      • 1...Sd5
        • 2.Rc4#
      • 1...Sc6
        • 2.Rd7#
      • 1...Sg6
        • 2.Rd7#
      • 1...Sg8
        • 2.Rd7#
      • 1...Sc8!
    • 1.Qxa4?
      • threat
        • 2.Qa1#
      • 1...g4+
        • 2.Rxg4#
      • 1...Sd5
        • 2.Rc4#
      • 1...c4!
    • 1.Qa6?
      • threat
        • 2.Qd3#
        • 2.Qc4#
      • 1...g4+
        • 2.Rxg4#
      • 1...Bxc2
        • 2.Sxe2#
        • 2.Qc4#
      • 1...c4
        • 2.Qxc4#
      • 1...Sb6
        • 2.Qd3#
        • 2.Qa1#
      • 1...Sb2!
    • 1.Qb7?
      • threat
        • 2.Rc4#
        • 2.Qe4#
      • 1...g4+
        • 2.Rxg4#
      • 1...Bxc2
        • 2.Sxe2#
      • 1...c4
        • 2.Rxc4#
      • 1...Sb2
        • 2.Qe4#
      • 1...Sc3
        • 2.Rd2#
      • 1...Sb6
        • 2.Qe4#
      • 1...Sd5
        • 2.Rc4#
        • 2.Qxd5#
      • 1...Sc6!
    • 1.Qa8?
      • threat
        • 2.Rc4#
        • 2.Qe4#
      • 1...g4+
        • 2.Rxg4#
      • 1...Bxc2
        • 2.Sxe2#
      • 1...c4
        • 2.Rxc4#
      • 1...Sb2
        • 2.Qe4#
      • 1...Sc3
        • 2.Rd2#
      • 1...Sb6
        • 2.Qe4#
        • 2.Qa1#
      • 1...Sd5
        • 2.Rc4#
        • 2.Qxd5#
      • 1...Sc6!
    • 1.f6?
      • 1...g4+
        • 2.Rxg4#
      • 1...Bxc2
        • 2.Sxe2#
      • 1...Sxg6
        • 2.Sf5#
      • 1...Sc6
        • 2.Sf5#
      • 1...Sb2
        • 2.Qxc5#
      • 1...Sc3
        • 2.Rd2#
      • 1...Sb6
        • 2.Qa1#
      • 1...Sd5
        • 2.Sf5#
        • 2.Rc4#
      • 1...Sf5
        • 2.Sxf5#
      • 1...Sc8
        • 2.Sf5#
      • 1...Sg8
        • 2.Sf5#
      • 1...gxf6!
  • Keys
    • 1.Bb8!
      • 1...g4+
        • 2.Rxg4#
      • 1...Bxc2
        • 2.Sxe2#
      • 1...Sxf5
        • 2.Sxf5#
      • 1...Sxg6
        • 2.Qd7#
      • 1...Sb2
        • 2.Qxc5#
      • 1...Sc3
        • 2.Rd2#
      • 1...Sb6
        • 2.Qa1#
      • 1...Sd5
        • 2.Rc4#
      • 1...Sc6
        • 2.Qd7#
      • 1...Sc8
        • 2.Qxg7#
      • 1...Sg8
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD,XR(B)::S(E),XP(b)
    • S(c);N_GUARD::QAB1(I),XP(f)
    • S(c);SBLOCK::R(B)
    • S(c);N_SPINP(f),OGATE::QAB(I)
    • S(h);SBLOCK::R1(B)
    • S(h);XP(F)::S(E),XS(h)
    • P(g);CHECK,OGATE::R(H),XP(g)
  • Tries
    • Try
      • R(H);XP(g)
      • Threat
        • R(H)
      • Vars
        • B(a);N_GUARD,XR(B)::S(E),XP(b)
        • S(c);SBLOCK::R(B)
        • S(h);SBLOCK::R1(B)
      • Refutation
        • S(h);
    • Try
      • R(H);XP(i)
      • Vars
        • P(g);CHECK,OGATE::R(H),XP(g)
        • B(a);N_GUARD,XR(B)::S(E),XP(b)
        • S(h);XP(F)::S(E),XS(h)
        • S(c);N_GUARD::QAB1(I),XP(f)
        • S(c);SBLOCK::R(B)
        • S(c);N_SPINP(f),OGATE::QAB(I)
        • S(h);SBLOCK::R1(B)
        • S(h);OGATE::R(H)
      • Refutation
        • S(h);
    • Try
      • Q(I);N_PINP(f),P_PINP(d),XS(c)
      • Threat
        • QAB(I)
      • Vars
        • P(g);CHECK,OGATE::R(H),XP(g)
        • S(h);SBLOCK::R1(B)
      • Refutation
        • P(f);N_SPINP(d)
    • Try
      • Q(I);N_PINP(f)
      • Threat
        • DUALS(2)
      • Vars
        • P(g);CHECK,OGATE::R(H),XP(g)
        • P(f);::QAR1(I),XP(f)
      • Refutation
        • S(c);
    • Try
      • Q(I);N_PINP(f)
      • Threat
        • DUALS(2)
      • Vars
        • P(g);CHECK,OGATE::R(H),XP(g)
        • B(a);N_GUARD,XR(B)::S(E),XP(b)
        • P(f);::R1(B),XP(f)
        • S(c);::QAR1(I)
        • S(c);SBLOCK::R(B)
      • Refutation
        • S(h);
    • Try
      • Q(I);N_PINP(f)
      • Threat
        • DUALS(2)
      • Vars
        • P(g);CHECK,OGATE::R(H),XP(g)
        • B(a);N_GUARD,XR(B)::S(E),XP(b)
        • P(f);::R1(B),XP(f)
        • S(c);::QAR1(I)
        • S(c);SBLOCK::R(B)
      • Refutation
        • S(h);
    • Try
      • P(F);
      • Vars
        • P(g);CHECK,OGATE::R(H),XP(g)
        • B(a);N_GUARD,XR(B)::S(E),XP(b)
        • S(h);N_GUARD,XR(H)::S(E)
        • S(h);N_GUARD::S(E)
        • S(c);N_GUARD::QAB1(I),XP(f)
        • S(c);SBLOCK::R(B)
        • S(c);N_SPINP(f),OGATE::QAB(I)
        • S(h);N_GUARD::S(E),XS(h)
      • Refutation
        • P(i);XP(F)
  • Actual
    • B(J);
    • Vars
      • P(g);CHECK,OGATE::R(H),XP(g)
      • B(a);N_GUARD,XR(B)::S(E),XP(b)
      • S(h);XP(F)::S(E),XS(h)
      • S(h);N_GUARD,XR(H)::QAR(I)
      • S(c);N_GUARD::QAB1(I),XP(f)
      • S(c);SBLOCK::R(B)
      • S(c);N_SPINP(f),OGATE::QAB(I)
      • S(h);SBLOCK::R1(B)
      • S(h);N_GUARD::QAR(I)
      • S(h);OGATE::QAB(I),XP(i)
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