MESON Chess Problem Database

Problem Display
PID: 276423 (8/2p4K/pp4R1/1k1P4/2b1Q3/1N6/PP2p3/4n3 w - - 0 1)

Barnes, Barry Peter

ten Cate, Pieter

Mat, 1981

8/2p4K/pp4R1/1k1P4/2b1Q3/1N6/PP2p3/4n3

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Ka4
      • 2.Qxc4#
    • 1...Bd3
      • 2.a4#
    • 1...Bxd5
      • 2.a4#
  • Tries
    • 1.a4+?
      • 1...Kxa4
        • 2.Qxc4#
      • 1...Kb4!
  • Keys
    • 1.Rg4!
      • threat
        • 2.Qxc4#
      • 1...Ka4
        • 2.Qxc4#
      • 1...Kb4
        • 2.Qxc4#
      • 1...Bxb3
        • 2.Qb4#
      • 1...Bxd5
        • 2.Qa4#
      • 1...Bd3
        • 2.a4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(d);N_GUARD,P_SPINB(c),S_FLIGHT::QAR2(D),XB(c)
    • B(c);::P(A)
    • B(c);XP(E)::P(A)
  • Tries
    • Try
      • P(A);CHECK
      • Vars
        • K(d);N_GUARD,P_SPINB(c),S_FLIGHT,XP(A)::QAR2(D),XB(c)
      • Refutation
        • K(d);P-FLIGHT,P_SPINB(c)
  • Actual
    • R(F);
    • Threat
      • QAB1(D),XB(c)
    • Vars
      • K(d);P_SPINB(c),S_FLIGHT::QAR2(D),XB(c)
      • K(d);P-FLIGHT,P_SPINB(c)::QAR1(D),XB(c)
      • B(c);OGATE,XS(C)::QAR1(D)
      • B(c);OGATE,XP(E)::QAB1(D)
      • B(c);P_PINQ(D)::P(A)
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