MESON Chess Problem Database

Problem Display
PID: 45543 (1b2N3/6N1/5R2/1Kp1n3/1p1rkp2/2P3P1/4BP2/3R2B1 w - - 0 1)

Stevenson, Edward

Double Pin-Mate after a Black King Move, 1980

1b2N3/6N1/5R2/1Kp1n3/1p1rkp2/2P3P1/4BP2/3R2B1

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Rxf4#
    • 1...Rd5
      • 2.Rxf4#
    • 1...Rd6
      • 2.Rxf4#
    • 1...Rd7
      • 2.Rxf4#
    • 1...Rd8
      • 2.Rxf4#
    • 1...c4
      • 2.Rxd4#
  • Tries
    • 1.Re6?
      • threat
        • 2.Sf6#
      • 1...Kd5
        • 2.Sf6#
      • 1...fxg3!
  • Keys
    • 1.Rf5!
      • threat
        • 2.Sf6#
      • 1...Kd5
        • 2.Bf3#
      • 1...Rd6
        • 2.Rxf4#
      • 1...Sg4
        • 2.f3#
      • 1...Sd7
        • 2.f3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(b);::R1(H),XP(d)
    • P(e);N_GUARD::R1(A),XR(b)
  • Tries
    • Try
      • R(H);P_PINS(f)
      • Threat
        • S(J)
      • Vars
        • K(c);N_SPINS(f),P_SPINR(b),S_FLIGHT::S(J)
      • Refutation
        • P(d);XP(F)
  • Actual
    • R(H);
    • Threat
      • S(J)
    • Vars
      • K(c);P_SPINR(b),P_SPINS(f),S_FLIGHT::B(C)
      • R(b);::R1(H),XP(d)
      • S(f);N_GUARD::P(D)
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