MESON Chess Problem Database

Problem Display
PID: 96218 (3K2Bb/3npR2/1RN2q2/3N1k1n/1p2p3/7P/1PQB4/8 w - - 0 1)

Stewart, John

Stubbs, Arthur Goodwin

The Field, 1953

(First published on Thu Oct 15 1953)

3K2Bb/3npR2/1RN2q2/3N1k1n/1p2p3/7P/1PQB4/8

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Rxf6#
    • 1...Kg6
      • 2.Scxe7#
    • 1...Se5
      • 2.Scxe7#
    • 1...e5+
      • 2.Sce7#
    • 1...e6+
      • 2.Sde7#
  • Tries
    • 1.Sd4+?
      • 1...Kg6
        • 2.Sxe7#
        • 2.Qxe4#
      • 1...Ke5!
    • 1.Rxf6+?
      • 1...Shxf6
        • 2.Sdxe7#
      • 1...Sdxf6
        • 2.Sdxe7#
      • 1...exf6
        • 2.Sde7#
      • 1...Bxf6!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Qg4#
      • 1...e5+
        • 2.Sce7#
      • 1...e6+
        • 2.Sde7#
      • 1...Ke6
        • 2.Rxf6#
      • 1...Kg6
        • 2.Scxe7#
      • 1...Se5
        • 2.Scxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINP(b),N_SPINQ(e),S_FLIGHT::B(J)+R(H),DCHECK,XQ(e)
    • K(c);N_SPINQ(e),S_FLIGHT::S(G),XP(g)
    • S(f);SBLOCK::S(G),XP(g)
    • P(g);CHECK,SBLOCK::S(G)
    • P(g);CHECK,SBLOCK::S(E)
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • K(c);N_SPINP(b),N_SPINQ(e),P-FLIGHT
    • Try
      • R(H);CHECK,XQ(e)
      • Vars
        • S(d);SBLOCK,XR(H)::S(E),XP(g)
        • S(f);SBLOCK,XR(H)::S(E),XP(g)
        • P(g);SBLOCK,XR(H)::S(E)
      • Refutation
        • B(h);XR(H)
  • Actual
    • Q(B);N_PINP(b)
    • Threat
      • QAB1(B)
    • Vars
      • P(g);CHECK,SBLOCK::S(G)
      • P(g);CHECK,SBLOCK::S(E)
      • K(c);N_SPINQ(e),S_FLIGHT::B(J)+R(H),DCHECK,XQ(e)
      • K(c);N_SPINQ(e),S_FLIGHT::S(G),XP(g)
      • S(f);SBLOCK::S(G),XP(g)
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