MESON Chess Problem Database

Problem Display
PID: 22350 (4N2n/4b2k/Q5p1/1r4P1/1p1BN3/p7/8/K7 w - - 0 1)

Chaturanga

Cincinnati Dispatch, 1859

4N2n/4b2k/Q5p1/1r4P1/1p1BN3/p7/8/K7

#2

6 + 7

1679 American Chess Nuts 1868

SOLUTION

  • SOUND
  • Sets
    • 1...Bc5
      • 2.S4f6#
    • 1...Bd6
      • 2.S4f6#
    • 1...Bf6
      • 2.S4xf6#
    • 1...Bf8
      • 2.S4f6#
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qg7#
        • 2.Qxh8#
      • 1...Kg8
        • 2.Qg7#
      • 1...Bxf6
        • 2.S4xf6#
      • 1...Re5
        • 2.Qg7#
      • 1...Bf8
        • 2.Qxh8#
      • 1...Sf7
        • 2.Qg7#
        • 2.Qxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(e);N_GUARD::S(C)
    • B(e);N_GUARD,P_PINB(B)::S(C),XB(e)
  • Actual
    • Q(E);
    • Threat
      • DUALS(2)
    • Vars
      • K(f);S_FLIGHT::QAR1(E)
      • B(e);P_PINB(B),XQ(E)::S(C),XB(e)
      • R(c);::QAR1(E)
      • B(e);::QAR1(E),XS(g)
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