MESON Chess Problem Database

Problem Display
PID: 242244 (2r2N2/8/4R2p/2pk1p2/7Q/3N1q2/2K2p1n/7B w - - 0 1)

Kisis, Imants J

Mat, 1977

2r2N2/8/4R2p/2pk1p2/7Q/3N1q2/2K2p1n/7B

#2

6 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sf1
      • 2.Bxf3#
  • Tries
    • 1.Qa4?
      • threat
        • 2.Sf4#
      • 1...c4
        • 2.Qd7#
      • 1...f4
        • 2.Sxf4#
      • 1...Qe4!
  • Keys
    • 1.Kc3!
      • threat
        • 2.Qc4#
      • 1...Qe4
        • 2.Sf4#
      • 1...Sg4
        • 2.Bxf3#
      • 1...c4
        • 2.Qd4#
      • 1...f4
        • 2.Qh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • S(b);N_GUARD::B(A),XQ(c)
  • Tries
    • Try
      • Q(D);
      • Threat
        • S(C)
      • Vars
        • P(d);SBLOCK::QAR2(D)
        • P(f);::S(C),XP(f)
      • Refutation
        • Q(c);P_PINS(C)
  • Actual
    • K(B);P-FLIGHT,P_SPINS(C)
    • Threat
      • QAB1(D)
    • Vars
      • Q(c);N_PINS(C)::S(C)
      • S(b);N_GUARD::B(A),XQ(c)
      • P(d);N_GUARD::QAR1(D)
      • P(f);OGATEB::QAR(D)
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