MESON Chess Problem Database

Problem Display
PID: 80164 (1Q1n4/p1n1pp2/RR2bk1K/3P2pp/3PP3/2NN4/p7/B7 w - - 0 1)

Lecomte, Roland

2nd Comm., Messigny, 1999

1Q1n4/p1n1pp2/RR2bk1K/3P2pp/3PP3/2NN4/p7/B7

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sb5
      • 2.Qe5#
    • 1...Sxd5
      • 2.Sxd5#
      • 2.Qe5#
    • 1...Sxa6
      • 2.Qe5#
    • 1...Sa8
      • 2.Qe5#
    • 1...Se8
      • 2.Qe5#
    • 1...Sc6
      • 2.Qh8#
    • 1...Sb7
      • 2.Qh8#
  • Tries
    • 1.Sf4?
      • threat
        • 2.Sxh5#
      • 1...h4
        • 2.Sh5#
      • 1...gxf4!
    • 1.Sc5?
      • threat
        • 2.Sd7#
      • 1...Sc6
        • 2.Qh8#
      • 1...axb6!
    • 1.Se5?
      • threat
        • 2.Sd7#
      • 1...Sc6
        • 2.Qh8#
      • 1...axb6!
    • 1.Rxa2?
      • threat
        • 2.Rf2#
      • 1...Sxd5
        • 2.Sxd5#
        • 2.Qe5#
      • 1...Sc6
        • 2.Qh8#
      • 1...axb6!
    • 1.Rxe6+?
      • 1...Scxe6
        • 2.Qe5#
      • 1...Sdxe6
        • 2.Qh8#
      • 1...fxe6!
  • Keys
    • 1.Rb2!
      • threat
        • 2.Rf2#
      • 1...Sxd5
        • 2.Sxd5#
        • 2.Qe5#
      • 1...Sxa6
        • 2.Qe5#
      • 1...Sc6
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • S(g);OGATE::QAB1(J)
    • S(g);OGATE,XR(G)::QAB1(J)
    • S(j);N_SPINB(d),OGATE::QAB(J)
    • S(j);OGATE::QAB(J)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C),XP(c)
      • Vars
        • P(c);::S(C)
      • Refutation
        • P(b);XS(C)
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • S(j);N_SPINB(d),OGATE::QAB(J)
      • Refutation
        • P(f);N_SPINB(d),XR(H)
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • S(j);N_SPINB(d),OGATE::QAB(J)
      • Refutation
        • P(f);N_SPINB(d),XR(H)
    • Try
      • R(G);XP(a)
      • Threat
        • R(G)
      • Vars
        • S(j);N_SPINB(d),OGATE::QAB(J)
      • Refutation
        • P(f);N_SPINB(d),XR(H)
    • Try
      • R(H);CHECK,XB(d)
      • Vars
        • S(g);OGATE,P_SPINS(g),XR(H)::QAB1(J)
        • S(j);OGATE,P_SPINS(j),XR(H)::QAB(J)
      • Refutation
        • P(i);P_SPINP(i),XR(H)
  • Actual
    • R(H);
    • Threat
      • R(H)
    • Vars
      • S(g);N_SPINB(d),OGATE,XR(G)::QAB1(J)
      • S(j);N_SPINB(d),OGATE::QAB(J)
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