MESON Chess Problem Database

Problem Display
PID: 47385 (4B2B/1Q1p3p/2p3PP/p2P4/4kNP1/p3P1K1/Pp6/8 w - - 0 1)

Willmott, Arthur

Problem Observer, 2003

4B2B/1Q1p3p/2p3PP/p2P4/4kNP1/p3P1K1/Pp6/8

#2

11 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...d6
      • 2.Qe7#
  • Tries
    • 1.Bd4?
      • 1...cxd5
        • 2.Qxd5#
      • 1...hxg6
        • 2.Bxg6#
      • 1...b1Q
        • 2.Qxb1#
      • 1...b1S
        • 2.Qxb1#
      • 1...b1B
        • 2.Qxb1#
      • 1...b1R
        • 2.Qxb1#
      • 1...c5
        • 2.d6#
      • 1...d6
        • 2.Qe7#
      • 1...a4!
    • 1.Qxb2?
      • threat
        • 2.Qd4#
        • 2.Qe5#
      • 1...Kxe3
        • 2.Qd4#
        • 2.Qe2#
      • 1...c5
        • 2.Qe5#
      • 1...d6
        • 2.Qd4#
      • 1...axb2!
    • 1.Qb4+?
      • 1...Kxe3
        • 2.Qe1#
        • 2.Qd4#
      • 1...axb4!
    • 1.Qc7?
      • threat
        • 2.Qe5#
      • 1...d6
        • 2.Qe7#
      • 1...Kxe3!
  • Keys
    • 1.Kf2!
      • 1...cxd5
        • 2.Qxd5#
      • 1...hxg6
        • 2.Bxg6#
      • 1...b1Q
        • 2.Qxb1#
      • 1...b1S
        • 2.Qxb1#
      • 1...b1B
        • 2.Qxb1#
      • 1...b1R
        • 2.Qxb1#
      • 1...a4
        • 2.Qb4#
      • 1...c5
        • 2.d6#
      • 1...d6
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • P(f);OGATE::QAR(I)
  • Tries
    • Try
      • B(K);
      • Vars
        • P(e);OGATE,P_SPINP(e),XP(F)::QAB1(I),XP(e)
        • P(g);OGATE,XP(G)::B(J),XP(g)
        • P(a);OGATE::QAB(I),XQ(a)
        • P(a);OGATE::QAB(I),XS(a)
        • P(a);OGATE::QAB(I),XB(a)
        • P(a);OGATE::QAB(I),XR(a)
        • P(e);::QAB(I)+P(F)
        • P(f);OGATE::QAR(I)
      • Refutation
        • P(d);
    • Try
      • Q(I);XP(a)
      • Threat
        • DUALS(2)
      • Vars
        • P(e);::QAR1(I)
        • P(f);::QAR1(I)
      • Refutation
        • P(b);XQ(I)
    • Try
      • Q(I);CHECK
      • Refutation
        • P(d);XQ(I)
    • Try
      • Q(I);
      • Threat
        • QAR1(I)
      • Vars
        • P(f);OGATE::QAR(I)
      • Refutation
        • K(c);P-FLIGHT,XP(B)
  • Actual
    • K(C);S_FLIGHT
    • Vars
      • P(e);OGATE,P_SPINP(e),XP(F)::QAB1(I),XP(e)
      • P(g);OGATE,XP(G)::B(J),XP(g)
      • P(a);OGATE::QAB(I),XQ(a)
      • P(a);OGATE::QAB(I),XS(a)
      • P(a);OGATE::QAB(I),XB(a)
      • P(a);OGATE::QAB(I),XR(a)
      • P(d);N_GUARD::QAR(I)
      • P(e);::QAB(I)+P(F)
      • P(f);OGATE::QAR(I)
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