MESON Chess Problem Database

Problem Display
PID: 120805 (8/n2KQB2/2p5/1p6/3k3n/6p1/3PPb2/8 w - - 0 1)

Pierce, James

Pierce Gambit, Chess Papers and Problems, 1888

8/n2KQB2/2p5/1p6/3k3n/6p1/3PPb2/8

#2

5 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Qe3#
    • 1...Be3
      • 2.Qxe3#
  • Tries
    • 1.e3+?
      • 1...Bxe3
        • 2.Qxe3#
      • 1...Kd3!
  • Keys
    • 1.Ke6!
      • threat
        • 2.Qb4#
      • 1...Kc4
        • 2.Ke5#
      • 1...Ke4
        • 2.Qxh4#
      • 1...b4
        • 2.Qxb4#
      • 1...c5
        • 2.Qxh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::QAB1(D)
    • B(a);N_GUARD::QAB1(D),XB(a)
  • Tries
    • Try
      • P(B);CHECK
      • Vars
        • B(a);OGATE,XP(B)::QAB1(D),XB(a)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • K(C);S_FLIGHT
    • Threat
      • QAR2(D)
    • Vars
      • K(c);P-FLIGHT::B(E)+K(C)
      • K(c);P-FLIGHT::QAR(D),XS(d)
      • P(e);::QAR2(D),XP(e)
      • P(f);SBLOCK::QAR(D),XS(d)
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