MESON Chess Problem Database

Problem Display
PID: 153406 (K2N4/1p2RR1B/3P2r1/3k3r/3p1P2/3pp3/7p/2Q4b w - - 0 1)

Cheylan, Yves

5th Comm., Wola Gulowska, 1994

K2N4/1p2RR1B/3P2r1/3k3r/3p1P2/3pp3/7p/2Q4b

#2

8 + 9

15345 Wola Gulowska Award 1994

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd6
      • 2.Rd7#
    • 1...b5
      • 2.Qc6#
    • 1...b6
      • 2.Qc6#
  • Tries
    • 1.Sxb7?
      • threat
        • 2.Qc5#
      • 1...Re5
        • 2.Rxe5#
      • 1...Rg8+!
    • 1.Re5+?
      • 1...Kxd6
        • 2.Qa3#
        • 2.Qc5#
        • 2.Qc7#
      • 1...Rxe5!
    • 1.Rf5+?
      • 1...Kxd6
        • 2.Qa3#
        • 2.Qc5#
        • 2.Qc7#
      • 1...Rxf5!
    • 1.Qc4+?
      • 1...Kxd6
        • 2.Rd7#
      • 1...Kxc4!
  • Keys
    • 1.Rxb7!
      • threat
        • 2.Qc6#
      • 1...Ke4
        • 2.Qxh1#
      • 1...Kxd6
        • 2.Rd7#
      • 1...Rxd6
        • 2.Rb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • K(f);OGATEB,P-FLIGHT,XP(C)::R1(D)
    • P(i);N_GUARD::QAB1(A)
  • Tries
    • Try
      • S(H);XP(i)
      • Threat
        • QAR1(A)
      • Vars
        • R(g);N_GUARD::R1(D),XR(g)
      • Refutation
        • R(h);CHECK
    • Try
      • R(D);CHECK
      • Refutation
        • R(g);XR(D)
    • Try
      • R(E);CHECK
      • Refutation
        • R(g);XR(E)
    • Try
      • Q(A);CHECK
      • Vars
        • K(f);P-FLIGHT,XP(C)::R1(D)
      • Refutation
        • K(f);S_FLIGHT,XQ(A)
  • Actual
    • R(D);XP(i)
    • Threat
      • QAB1(A)
    • Vars
      • K(f);P_SPINR(h),S_FLIGHT::QAB(A),XB(a)
      • K(f);OGATEB,P-FLIGHT,P_PINR(D),XP(C)::R1(E)
      • R(h);SBLOCK,XP(C)::R(D)
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