MESON Chess Problem Database

Problem Display
PID: 134746 (7Q/5r2/1R3P2/8/8/8/P4K2/kB5R w - - 0 1)

Beal, Edward W

The Field, 1966

(First published on Thu Jun 30 1966)

7Q/5r2/1R3P2/8/8/8/P4K2/kB5R

#2

7 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf6+
      • 2.Qxf6#
    • 1...Ra7
      • 2.f7#
    • 1...Rb7
      • 2.f7#
    • 1...Re7
      • 2.fxe7#
  • Tries
    • 1.Qa8?
      • threat
        • 2.Bc2#
        • 2.Bd3#
        • 2.Be4#
        • 2.Bf5#
        • 2.Bg6#
        • 2.Bh7#
      • 1...Rxf6+
        • 2.Bf5#
      • 1...Rc7
        • 2.Bc2#
      • 1...Rd7
        • 2.Bd3#
      • 1...Re7
        • 2.Be4#
      • 1...Rg7
        • 2.Bg6#
      • 1...Rh7
        • 2.Bxh7#
      • 1...Ra7!
  • Keys
    • 1.Qg8!
      • 1...Rxf6+
        • 2.Bf5#
      • 1...Rc7
        • 2.Bc2#
      • 1...Ra7
        • 2.Bc2#
        • 2.Bd3#
        • 2.Be4#
        • 2.Bf5#
        • 2.Bg6#
        • 2.Bh7#
      • 1...Rb7
        • 2.Bc2#
        • 2.Bd3#
        • 2.Be4#
        • 2.Bf5#
        • 2.Bg6#
        • 2.Bh7#
      • 1...Rd7
        • 2.Bd3#
      • 1...Re7
        • 2.Be4#
      • 1...Rg7
        • 2.Bg6#
      • 1...Rh7
        • 2.Bxh7#
      • 1...Rf8
        • 2.Bc2#
        • 2.Bd3#
        • 2.Be4#
        • 2.Bf5#
        • 2.Bg6#
        • 2.Bh7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(b);CHECK,OGATE,P_SPINR(b),XP(F)::QAB(G),XR(b)
    • R(b);N_PINP(F)::QAB(G)+P(F)
    • R(b);N_PINP(F)::QAB(G)+P(F),XR(b)
  • Tries
    • Try
      • Q(G);
      • Threat
        • DUALS(6)
      • Vars
        • R(b);CHECK,XP(F)::R(B)+B(A)
        • R(b);N_PINP(F)::R(B)+B(A)
        • R(b);N_PINP(F)::R(B)+B(A),XR(b)
      • Refutation
        • R(b);N_PINP(F)
  • Actual
    • Q(G);
    • Vars
      • R(b);CHECK,XP(F)::R(B)+B(A)
      • R(b);N_PINP(F)::R(B)+B(A)
      • R(b);N_PINP(F)::R(B)+B(A),XR(b)
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