MESON Chess Problem Database

Problem Display
PID: 140647 (6Q1/3pB1b1/4pP1r/1B3b1N/3pkP1N/3RP3/2R5/1K5n w - - 0 1)

Cheylan, Yves

4th Prize, BCF 137. Ty., 1974-1975

6Q1/3pB1b1/4pP1r/1B3b1N/3pkP1N/3RP3/2R5/1K5n

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Rxd4#
      • 2.Qa8#
    • 1...Bxf6
      • 2.Qg2#
    • 1...Bf8
      • 2.Qg2#
    • 1...Bh8
      • 2.Qg2#
  • Tries
    • 1.Sg3+?
      • 1...Kd5
        • 2.Rc5#
        • 2.Rxd4#
        • 2.Qa8#
      • 1...Sxg3!
    • 1.Bd6?
      • threat
        • 2.Qa8#
      • 1...Kd5
        • 2.Rxd4#
      • 1...Bf8
        • 2.Qg2#
      • 1...Rh8!
  • Keys
    • 1.Re2!
      • threat
        • 2.Rxd4#
      • 1...Kd5
        • 2.Qa8#
      • 1...Bxf6
        • 2.Qg2#
      • 1...dxe3
        • 2.Rexe3#
      • 1...e5
        • 2.exd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(h);OGATE,XP(I)::QAB(K)
    • B(h);OGATE::QAB(K)
  • Tries
    • Try
      • S(H);CHECK
      • Refutation
        • S(a);XS(H)
    • Try
      • B(J);
      • Threat
        • QAB(K)
      • Vars
        • K(c);P_SPINP(b),S_FLIGHT::R1(C),XP(b)
        • B(h);OGATE::QAB(K)
      • Refutation
        • R(f);
  • Actual
    • R(B);
    • Threat
      • R1(C),XP(b)
    • Vars
      • K(c);P_PINR(C),P_SPINP(b),S_FLIGHT::QAB(K)
      • B(h);OGATE,XP(I)::QAB(K)
      • P(b);OGATE,P_SPINP(b),XP(D)::R1(B),XP(b)
      • P(e);::R(B)+P(D),XP(b)
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