MESON Chess Problem Database

Problem Display
PID: 61675 (1Q6/1B2ppNK/3B4/2P2R2/2pk2nR/8/3PPn2/1b6 w - - 0 1)

Eaton, Vincent Lanius

The Chess Review, 1936

1Q6/1B2ppNK/3B4/2P2R2/2pk2nR/8/3PPn2/1b6

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bd3
      • 2.e3#
    • 1...Bxf5+
      • 2.Sxf5#
    • 1...Sd3
      • 2.e3#
    • 1...Se4
      • 2.Rd5#
    • 1...exd6
      • 2.Qxd6#
    • 1...f6
      • 2.Se6#
  • Keys
    • 1.Qa7!
      • threat
        • 2.Be5#
      • 1...Bxf5+
        • 2.Sxf5#
      • 1...exd6
        • 2.cxd6#
      • 1...c3
        • 2.Qa4#
      • 1...Be4
        • 2.c6#
      • 1...Sd3
        • 2.e3#
      • 1...Se4
        • 2.Rd5#
      • 1...e5
        • 2.Bxe5#
      • 1...f6
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(a);SBLOCK::P(B)
    • B(a);CHECK,XR(E)::S(H),XB(a)
    • S(b);N_PINR(E),SBLOCK::P(B)
    • S(b);N_PINR(E),N_SPINS(e),SBLOCK::R1(E)
    • P(f);OGATE,XB(F)::QAR2(J),XP(f)
    • P(g);N_GUARD::S(H)
  • Actual
    • Q(J);
    • Threat
      • B(F)
    • Vars
      • B(a);CHECK,XR(E)::S(H),XB(a)
      • P(f);OGATE,XB(F)::QAB(J)+P(D),XP(f)
      • P(c);OGATEB::QAR(J)
      • B(a);N_SPINS(e),SBLOCK::QAB(J)+P(D)
      • S(b);N_PINR(E),SBLOCK::P(B)
      • S(b);N_PINR(E),N_SPINS(e),SBLOCK::R1(E)
      • P(f);::B(F),XP(f)
      • P(g);N_GUARD::S(H)
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