MESON Chess Problem Database

Problem Display
PID: 11775 (5Q1K/3b3p/4B2r/4k1P1/RN3R2/7q/nN1P2n1/b2r4 w - - 0 1)

Morice, Jean

20th Place, 2. International Team (Friendship) Match, 1967-1970

5Q1K/3b3p/4B2r/4k1P1/RN3R2/7q/nN1P2n1/b2r4

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe6
      • 2.Re4#
    • 1...Qxe6
      • 2.S2d3#
    • 1...Rxe6
      • 2.Sc4#
    • 1...Bxe6
      • 2.Qb8#
  • Tries
    • 1.Ra5+?
      • 1...Kxe6
        • 2.Re4#
      • 1...Bb5!
    • 1.d4+?
      • 1...Kxe6
        • 2.Re4#
      • 1...Rxd4!
  • Keys
    • 1.Rd4!
      • threat
        • 2.Qd6#
      • 1...Kxd4
        • 2.Sc6#
      • 1...Kxe6
        • 2.Re4#
      • 1...Qxe6
        • 2.S4d3#
      • 1...Rxe6
        • 2.Qc5#
      • 1...Bxe6
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(f);P-FLIGHT,P_PINS(A),XB(G)::R(E)
    • Q(e);N_GUARD,SBLOCK,XB(G)::S(A)
    • R(g);SBLOCK,XB(G)::S(A)
    • B(h);SBLOCK,XB(G)::QAB(H)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(f);P-FLIGHT,P_PINS(A),XB(G)::R(E)
      • Refutation
        • B(h);P_SPINB(h)
    • Try
      • P(B);CHECK
      • Vars
        • K(f);P-FLIGHT,XB(G)::R(E)
      • Refutation
        • R(b);XP(B)
  • Actual
    • R(E);
    • Threat
      • QAB1(H)
    • Vars
      • K(f);S_FLIGHT,XR(E)::R(C)+S(D),DCHECK
      • K(f);P-FLIGHT,XB(G)::R(E)
      • Q(e);N_GUARD,SBLOCK,XB(G)::S(D)
      • R(g);SBLOCK,XB(G)::QAR2(H)
      • B(h);N_GUARD,SBLOCK,XB(G)::S(D)
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