MESON Chess Problem Database

Problem Display
PID: 182452 (5BKb/r1pp1B2/1p6/4Ppp1/3k2p1/P7/1P3NN1/7Q w - - 0 1)

Bouttier, Pierre

Bulletin Ouvrier des Echecs, 1953

5BKb/r1pp1B2/1p6/4Ppp1/3k2p1/P7/1P3NN1/7Q

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe5
      • 2.Qxh8#
    • 1...Bxe5
      • 2.Qd1#
  • Tries
    • 1.Qc1?
      • threat
        • 2.Qe3#
        • 2.Qc3#
      • 1...Kxe5
        • 2.Qc3#
      • 1...f4
        • 2.Qc3#
      • 1...d5
        • 2.Qc3#
      • 1...Rxa3!
    • 1.Qe1?
      • threat
        • 2.Qc3#
        • 2.Qe3#
      • 1...d5
        • 2.Qc3#
      • 1...f4
        • 2.Qc3#
        • 2.Qe4#
      • 1...Rxa3!
  • Keys
    • 1.Qa1!
      • threat
        • 2.b3#
        • 2.b4#
      • 1...Kxe5
        • 2.b3#
        • 2.b4#
      • 1...Rxa3
        • 2.bxa3#
      • 1...d5
        • 2.b3#
      • 1...d6
        • 2.b4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • K(a);OGATEB,S_FLIGHT,XP(F)::QAB(A),XB(i)
    • B(i);SBLOCK,XP(F)::QAR(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);S_FLIGHT,XP(F)::QAB(A)
        • P(c);::QAB1(A)
        • P(h);::QAB1(A)
      • Refutation
        • R(f);XP(E)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(h);::QAB1(A)
      • Refutation
        • R(f);XP(E)
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • R(f);OGATE,XP(E)::QAB(A)+P(B),XR(f)
      • P(h);::QAB(A)+P(B)
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