MESON Chess Problem Database

Problem Display
PID: 243672 (8/4K3/3B3p/2pk2nR/Q7/1N1p1p2/8/5bb1 w - - 0 1)

Bantysh, Nikolai Ivanovich

Pat a Mat, 2008

8/4K3/3B3p/2pk2nR/Q7/1N1p1p2/8/5bb1

#2

5 + 8

5454 Near Snap 2021
15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Qa8#
  • Tries
    • 1.Sa5?
      • threat
        • 2.Qc4#
      • 1...Bd4
        • 2.Qc6#
      • 1...c4
        • 2.Qxc4#
      • 1...d2!
    • 1.Rh4?
      • threat
        • 2.Qa8#
      • 1...Se4
        • 2.Qxe4#
      • 1...Bd4!
  • Keys
    • 1.Sd2!
      • threat
        • 2.Qe4#
      • 1...c4
        • 2.Qxc4#
      • 1...Bd4
        • 2.Qa8#

This anticipates 246317(2009)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(e);SBLOCK::QAB(B)
  • Tries
    • Try
      • S(A);
      • Threat
        • QAB1(B)
      • Vars
        • B(b);SBLOCK::QAB1(B)
        • P(e);::QAB1(B),XP(e)
      • Refutation
        • P(c);
    • Try
      • R(C);N_PINS(g)
      • Threat
        • QAB(B)
      • Vars
        • S(g);N_GUARD::QAB1(B),XS(g)
      • Refutation
        • B(b);
  • Actual
    • S(A);
    • Threat
      • QAB1(B)
    • Vars
      • P(e);::QAB1(B),XP(e)
      • B(b);SBLOCK::QAB(B)
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