MESON Chess Problem Database

Problem Display
PID: 221792 (1Q6/7K/4p1n1/3pP2N/8/3B1k2/8/3Nb1R1 w - - 0 1)

Simeon, HB

The Field, 1893

(First published on Sat Nov 25 1893)

1Q6/7K/4p1n1/3pP2N/8/3B1k2/8/3Nb1R1

#2

7 + 5

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bd2
      • 2.Rg3#
    • 1...Bc3
      • 2.Rg3#
    • 1...Bg3
      • 2.Rxg3#
    • 1...Bb4
      • 2.Rg3#
    • 1...Ba5
      • 2.Rg3#
    • 1...Sf8+
      • 2.Qxf8#
    • 1...d4
      • 2.Qb7#
      • 2.Qa8#
  • Tries
    • 1.Kxg6?
      • threat
        • 2.Qf8#
      • 1...Bg3
        • 2.Rxg3#
      • 1...Bd2
        • 2.Rg3#
      • 1...Bb4
        • 2.Rg3#
      • 1...Bh4!
    • 1.Rxg6?
      • threat
        • 2.Qf8#
      • 1...Bg3
        • 2.Rxg3#
      • 1...Bd2
        • 2.Rg3#
      • 1...Bb4
        • 2.Rg3#
      • 1...Bh4!
    • 1.Qa7?
      • threat
        • 2.Qe3#
      • 1...Bg3
        • 2.Rxg3#
      • 1...Bd2
        • 2.Rg3#
        • 2.Qf2#
      • 1...Bf2
        • 2.Qxf2#
      • 1...d4
        • 2.Qb7#
        • 2.Qa8#
      • 1...Sf8+!
    • 1.Qb6?
      • threat
        • 2.Qe3#
      • 1...Bg3
        • 2.Rxg3#
      • 1...Bd2
        • 2.Rg3#
        • 2.Qf2#
      • 1...Bf2
        • 2.Qxf2#
      • 1...d4
        • 2.Qc6#
        • 2.Qb7#
      • 1...Sf8+!
    • 1.Qf8+?
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sxf8+!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Qg4#
      • 1...Sf8+
        • 2.Qxf8#
      • 1...Bxb4
        • 2.Rg3#
      • 1...Sxe5
        • 2.Qf4#
      • 1...Bg3
        • 2.Rxg3#
      • 1...Sf4
        • 2.Qxf4#
      • 1...d4
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • B(a);N_GUARD::R1(B)
    • B(a);N_GUARD::R1(B),XB(a)
    • S(e);CHECK,N_GUARD::QAR(G),XS(e)
  • Tries
    • Try
      • K(F);S_FLIGHT,XS(e)
      • Threat
        • QAR(G)
      • Vars
        • B(a);N_GUARD::R1(B),XB(a)
        • B(a);N_GUARD::R1(B)
      • Refutation
        • B(a);
    • Try
      • R(B);XS(e)
      • Threat
        • QAR(G)
      • Vars
        • B(a);N_GUARD::R1(B),XB(a)
        • B(a);N_GUARD::R1(B)
      • Refutation
        • B(a);
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • B(a);N_GUARD::R1(B),XB(a)
        • B(a);N_GUARD::QAR1(G),XB(a)
      • Refutation
        • S(e);CHECK
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • B(a);N_GUARD::R1(B),XB(a)
        • B(a);N_GUARD::QAR1(G),XB(a)
      • Refutation
        • S(e);CHECK
    • Try
      • Q(G);CHECK
      • Vars
        • S(e);N_GUARD,P_SPINS(e)::QAR1(G),XS(e)
      • Refutation
        • S(e);CHECK,XQ(G)
  • Actual
    • Q(G);
    • Threat
      • QAB1(G)
    • Vars
      • S(e);CHECK,N_GUARD::QAR(G),XS(e)
      • B(a);N_GUARD,XQ(G)::R1(B)
      • S(e);N_GUARD,XP(D)::QAR1(G)
      • B(a);N_GUARD::R1(B),XB(a)
      • S(e);N_GUARD::QAR1(G),XS(e)
      • P(c);OGATEB::QAB(G)
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