MESON Chess Problem Database

Problem Display
PID: 92746 (8/8/6Q1/7n/2pP1k2/7b/4BK2/2N5 w - - 0 1)

di Scala, Pascal

Les Echos du Touquet, 1997

8/8/6Q1/7n/2pP1k2/7b/4BK2/2N5

#2

5 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bf1
      • 2.Qg4#
    • 1...Bg2
      • 2.Qg4#
    • 1...Bg4
      • 2.Qxg4#
    • 1...c3
      • 2.Sd3#
  • Tries
    • 1.Bf3?
      • threat
        • 2.Se2#
      • 1...Bf1
        • 2.Qg4#
      • 1...Sg3!
    • 1.Bxh5?
      • threat
        • 2.Se2#
      • 1...Bf1
        • 2.Qg4#
      • 1...Bg4
        • 2.Qxg4#
      • 1...Bf5!
    • 1.Qxh5?
      • threat
        • 2.Qe5#
      • 1...Ke4
        • 2.Qe5#
      • 1...Bf5!
    • 1.Qg5+?
      • 1...Ke4
        • 2.Qe5#
      • 1...Kxg5!
  • Keys
    • 1.Bd3!
      • threat
        • 2.Se2#
      • 1...cxd3
        • 2.Sxd3#
      • 1...Bf1
        • 2.Qf5#
      • 1...Bg4
        • 2.Qh6#
      • 1...Sg3
        • 2.Qxg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::QAR1(E)
    • B(a);N_GUARD::QAR1(E),XB(a)
    • P(b);N_GUARD::S(A)
  • Tries
    • Try
      • B(B);
      • Threat
        • S(A)
      • Vars
        • B(a);N_GUARD::QAR1(E)
      • Refutation
        • S(d);
    • Try
      • B(B);XS(d)
      • Threat
        • S(A)
      • Vars
        • B(a);N_GUARD::QAR1(E)
        • B(a);N_GUARD::QAR1(E),XB(a)
      • Refutation
        • B(a);
    • Try
      • Q(E);XS(d)
      • Threat
        • QAB1(E)
      • Vars
        • K(c);P-FLIGHT::QAR1(E)
      • Refutation
        • B(a);
    • Try
      • Q(E);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(E)
      • Refutation
        • K(c);S_FLIGHT,XQ(E)
  • Actual
    • B(B);
    • Threat
      • S(A)
    • Vars
      • P(b);XB(B)::S(A),XP(b)
      • B(a);N_GUARD::QAR1(E)
      • B(a);SBLOCK::QAB(E)
      • S(d);N_GUARD::QAB1(E),XS(d)
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