MESON Chess Problem Database

Problem Display
PID: 242200 (3b4/2p2QnK/RN3p1B/4pk2/R7/1r4p1/8/4NBn1 w - - 0 1)

Kisis, Imants J

Themes-64, 1964

3b4/2p2QnK/RN3p1B/4pk2/R7/1r4p1/8/4NBn1

#2

8 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Se2
      • 2.Bh3#
    • 1...Sf3
      • 2.Bh3#
    • 1...Sh3
      • 2.Bxh3#
    • 1...Sh5
      • 2.Qd7#
    • 1...Se6
      • 2.Qg6#
    • 1...Se8
      • 2.Qd7#
  • Tries
    • 1.Bc4?
      • threat
        • 2.Qg6#
      • 1...Ke4
        • 2.Bd3#
      • 1...Kg4
        • 2.Be6#
      • 1...e4!
    • 1.Qc4?
      • threat
        • 2.Qg4#
      • 1...e4
        • 2.Qxe4#
      • 1...Rb4!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Qg6#
      • 1...Ke4
        • 2.Sd6#
      • 1...Kg4
        • 2.Se3#
      • 1...Rb6
        • 2.Se3#
      • 1...c6
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • S(a);N_GUARD::B(B)
    • S(a);N_GUARD::B(B),XS(a)
    • S(h);N_GUARD::QAB(G)
    • S(h);SBLOCK::QAB1(G)
  • Tries
    • Try
      • B(B);
      • Threat
        • QAB1(G)
      • Vars
        • K(e);N_SPINP(f),S_FLIGHT::R(C)+B(B),DCHECK
      • Refutation
        • P(d);
    • Try
      • Q(G);N_PINP(f)
      • Threat
        • QAB1(G)
      • Vars
        • P(d);::QAB1(G),XP(d)
      • Refutation
        • R(b);
  • Actual
    • S(E);
    • Threat
      • QAB1(G)
    • Vars
      • K(e);N_SPINP(f),S_FLIGHT::R(C)+S(E),DCHECK
      • R(b);N_GUARD::S(E)
      • P(g);N_GUARD::S(E)
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