MESON Chess Problem Database

Problem Display
PID: 183398 (1Br1B1N1/R1p5/3b4/R2Nk3/2P3P1/1QP2PK1/8/8 w - - 0 1)

Davis, Edward

Kipping, Cyril Stanley

The Problemist, 1943

1Br1B1N1/R1p5/3b4/R2Nk3/2P3P1/1QP2PK1/8/8

#2

12 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Re7#
    • 1...c6
      • 2.Re7#
  • Tries
    • 1.Sf4+?
      • 1...c5
        • 2.Re7#
      • 1...Bc5!
    • 1.f4+?
      • 1...Ke4
        • 2.Bg6#
        • 2.Qc2#
        • 2.Qb1#
      • 1...Ke6!
  • Keys
    • 1.Qb6!
      • threat
        • 2.Qe3#
      • 1...Ke6+
        • 2.Sf4#
      • 1...cxb6
        • 2.Re7#
      • 1...Bc5
        • 2.Qf6#
      • 1...Ba3
        • 2.Sb4#
        • 2.Qf6#
      • 1...Bb4
        • 2.Sxb4#
        • 2.Qf6#
      • 1...Be7
        • 2.Sdxe7#
      • 1...Bf8
        • 2.Sde7#
        • 2.Qf6#
      • 1...c5
        • 2.Re7#
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • P(c);OGATE,P_SPINB(b)::R(I)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • P(c);OGATE,P_SPINB(b),P_SPINP(c)::R(I)
      • Refutation
        • B(b);P_SPINB(b),P_SPINP(c)
    • Try
      • P(C);CHECK
      • Refutation
        • K(a);P-FLIGHT,P_PINP(C)
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • K(a);CHECK,P-FLIGHT,P_SPINB(b)::S(H)
      • P(c);OGATE,P_SPINB(b),XQ(A)::R(I)
      • B(b);OGATE,P_SPINP(c)::QAB1(A)
      • B(b);N_GUARD,P_SPINP(c)::R(G)+S(H),XB(b)
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