MESON Chess Problem Database

Problem Display
PID: 81173 (2q5/4p1PP/5NRK/3B1kp1/3P1N1p/3P4/4Ppr1/3Q3n w - - 0 1)

Cheylan, Yves

Le Courrier des Echecs, 1989

2q5/4p1PP/5NRK/3B1kp1/3P1N1p/3P4/4Ppr1/3Q3n

#2

11 + 8

SOLUTION

  • SOUND
  • Tries
    • 1.Rxg5+?
      • 1...Kxf4
        • 2.Qd2#
      • 1...Kxf6
        • 2.Sh5#
      • 1...Rxg5!
    • 1.e3?
      • threat
        • 2.Be4#
      • 1...gxf4
        • 2.e4#
      • 1...Qe6
        • 2.Bxe6#
      • 1...Qb7
        • 2.Be6#
      • 1...Qa8
        • 2.Be6#
      • 1...Sg3
        • 2.Qg4#
      • 1...Qc6!
  • Keys
    • 1.S6h5!
      • threat
        • 2.e4#
      • 1...Kg4
        • 2.Rxg5#
        • 2.e4#
      • 1...gxf4
        • 2.Be4#
      • 1...Qe6
        • 2.Bxe6#
      • 1...Sg3
        • 2.Rxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(H);CHECK,XP(f)
      • Vars
        • K(e);P-FLIGHT,XS(E)::QAB(A)
        • K(e);P-FLIGHT,XS(G)::S(E)
      • Refutation
        • R(c);XR(H)
    • Try
      • P(B);
      • Threat
        • B(F)
      • Vars
        • P(f);SBLOCK,XS(E)::P(B)
        • Q(h);N_GUARD::B(F),XQ(h)
        • Q(h);N_GUARD::B(F)
        • S(a);S_CUTR(c)::QAB1(A)
      • Refutation
        • Q(h);
  • Actual
    • S(G);
    • Threat
      • P(B)
    • Vars
      • P(f);XS(E)::B(F)
      • Q(h);N_GUARD,P_PINR(H)::B(F),XQ(h)
      • S(a);S_CUTR(c)::R1(H),XP(f)
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