MESON Chess Problem Database

Problem Display
PID: 271328 (3r4/1b3B2/1B2P1N1/P2k1N2/2np4/8/7b/1Q5K w - - 0 1)

Crisan, Vlaicu

Buletin Problemistic, 1995

3r4/1b3B2/1B2P1N1/P2k1N2/2np4/8/7b/1Q5K

#2

8 + 6

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Sge7#
    • 1...Rd6
      • 2.Sfe7#
    • 1...Be5
      • 2.Sge7#
    • 1...Bc6
      • 2.e7#
  • Tries
    • 1.Qa2?
      • threat
        • 2.Qg2#
      • 1...Kc6
        • 2.Qxc4#
      • 1...Ke4!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Qg2#
      • 1...Kc6
        • 2.Qxc4#
      • 1...Sxa5
        • 2.e7#
      • 1...Sxb6
        • 2.e7#
      • 1...Sb2
        • 2.e7#
      • 1...Sd2
        • 2.e7#
      • 1...Sa3
        • 2.e7#
      • 1...Se3
        • 2.e7#
      • 1...Se5
        • 2.Sge7#
      • 1...Sd6
        • 2.Sfe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 3
  • Sets
    • K(d);N_GUARD,S_FLIGHT::S(G)
    • R(f);SBLOCK::S(D)
    • B(a);SBLOCK::S(G)
    • B(e);SBLOCK::B(H)+P(F)
  • Tries
    • Try
      • Q(A);P_PINS(b)
      • Threat
        • QAB(A)
      • Vars
        • K(d);N_GUARD,N_SPINS(b),S_FLIGHT::QAR2(A),XS(b)
      • Refutation
        • K(d);N_SPINS(b),S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • K(d);N_GUARD,P_SPINS(b),S_FLIGHT::QAR2(A),XS(b)
      • S(b);XP(C)::B(H)+P(F)
      • S(b);XB(E)::B(H)+P(F)
      • S(b);::B(H)+P(F)
      • S(b);SBLOCK::S(G)
      • S(b);SBLOCK::S(D)
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