MESON Chess Problem Database

Problem Display
PID: 43347 (4Q1b1/8/8/1p1kBN2/1P6/P4P1K/qp2P3/2b5 w - - 0 1)

Markovtsy, Vassyl Yuriovich

The Problemist, 2002

4Q1b1/8/8/1p1kBN2/1P6/P4P1K/qp2P3/2b5

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qxg8#
    • 1...Be3
      • 2.Sxe3#
    • 1...Be6
      • 2.Qxb5#
  • Tries
    • 1.Bxb2?
      • threat
        • 2.Qe4#
      • 1...Kc4
        • 2.Qxg8#
      • 1...Qc4
        • 2.Qd7#
      • 1...Be6
        • 2.Qxb5#
      • 1...Qb1!
    • 1.Qd7+?
      • 1...Kc4
        • 2.Qd3#
      • 1...Kxe5!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Qxb5#
      • 1...Be6+
        • 2.Qxe6#
      • 1...Kc4
        • 2.Qc6#
      • 1...Qc4
        • 2.e4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(e);S_FLIGHT::QAB(H),XB(f)
    • B(a);N_GUARD::S(G),XB(a)
    • B(f);P_PINS(G),SBLOCK::QAR2(H),XP(d)
  • Tries
    • Try
      • B(F);XP(c)
      • Threat
        • QAB1(H)
      • Vars
        • K(e);S_FLIGHT::QAB(H),XB(f)
        • Q(b);SBLOCK::QAR2(H)
        • B(f);P_PINS(G),SBLOCK::QAR2(H),XP(d)
      • Refutation
        • Q(b);
    • Try
      • Q(H);CHECK
      • Vars
        • K(e);OGATE,S_FLIGHT::QAB1(H)
      • Refutation
        • K(e);P-FLIGHT,XB(F)
  • Actual
    • S(G);
    • Threat
      • QAR2(H),XP(d)
    • Vars
      • B(f);CHECK,N_GUARD::QAB1(H),XB(f)
      • K(e);S_FLIGHT::QAR2(H)
      • Q(b);SBLOCK::P(A)
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