MESON Chess Problem Database

Problem Display
PID: 244168 (2B5/8/1NPP3Q/1pr1kP1n/2p3b1/1n1P1P2/2N1P3/4R1K1 w - - 0 1)

Brabec, Juraj

Pravda, 1967

2B5/8/1NPP3Q/1pr1kP1n/2p3b1/1n1P1P2/2N1P3/4R1K1

#2

12 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf3
      • 2.exf3#
    • 1...Sa1
      • 2.d4#
    • 1...Sc1
      • 2.d4#
    • 1...Sd2
      • 2.d4#
    • 1...Sa5
      • 2.d4#
    • 1...Sg3
      • 2.f4#
    • 1...Sf6
      • 2.Qh2#
    • 1...Sg7
      • 2.f4#
    • 1...cxd3
      • 2.exd3#
  • Tries
    • 1.Sd7+?
      • 1...Kxf5
        • 2.Se3#
        • 2.e4#
      • 1...Kd5!
    • 1.Qe3+?
      • 1...Kf6
        • 2.Qe7#
      • 1...Kxd6!
    • 1.e3?
      • threat
        • 2.Qe6#
      • 1...Sf6
        • 2.Qf4#
        • 2.Qh2#
      • 1...Sd4
        • 2.exd4#
      • 1...Sf4
        • 2.exf4#
      • 1...Sg7
        • 2.f4#
      • 1...Bxf5!
  • Keys
    • 1.e4!
      • threat
        • 2.Sd7#
      • 1...Bxf5
        • 2.exf5#
      • 1...Sf6
        • 2.Qh2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • B(c);OGATE,XP(F)::R(A)+P(D),XB(c)
    • S(a);N_GUARD::P(E)
    • S(g);N_GUARD::P(F)
    • S(g);OGATE,SBLOCK::QAB(K)
    • P(b);OGATE,XP(E)::R(A)+P(D),XP(b)
  • Tries
    • Try
      • S(H);CHECK
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • Q(K);CHECK
      • Vars
        • K(f);OGATE,S_FLIGHT::QAB1(K)
      • Refutation
        • K(f);S_FLIGHT,XP(J)
    • Try
      • P(D);
      • Threat
        • QAR1(K)
      • Vars
        • S(a);OGATE::R(A)+P(D)DCHECK,XS(a)
        • S(g);OGATE::R(A)+P(D)DCHECK,XS(g)
        • S(g);N_GUARD::P(F)
      • Refutation
        • B(c);XP(G)
  • Actual
    • P(D);
    • Threat
      • S(H)
    • Vars
      • B(c);OGATE,XP(G)::R(A)+P(D),XB(c)
      • S(g);OGATE,SBLOCK::QAB(K)
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