MESON Chess Problem Database

Problem Display
PID: 32093 (2B1b2K/3pP3/2PPk3/q2pBp1P/3p4/5N2/8/8 w - - 0 1)

Brada, Jaroslav

4th ?, 1000 sachovnic, 1989

2B1b2K/3pP3/2PPk3/q2pBp1P/3p4/5N2/8/8

#2

8 + 7

3449 Czech Album (1988-1990) 1995

SOLUTION

  • SOUND
  • Sets
    • 1...Kf7
      • 2.Sg5#
    • 1...Qd8
      • 2.exd8S#
    • 1...Bf7
      • 2.Bxd7#
  • Tries
    • 1.Bxd7+?
      • 1...Kf7
        • 2.Sg5#
      • 1...Bxd7!
  • Keys
    • 1.cxd7!
      • threat
        • 2.dxe8Q#
        • 2.dxe8B#
        • 2.d8S#
      • 1...Kf7
        • 2.Sg5#
      • 1...Bxh5
        • 2.d8S#
      • 1...Bxd7
        • 2.e8Q#
      • 1...f4
        • 2.dxe8Q#
        • 2.dxe8B#
        • 2.d8S#
      • 1...Qe1
        • 2.dxe8Q#
        • 2.dxe8B#
        • 2.d8S#
      • 1...Qd2
        • 2.dxe8Q#
        • 2.dxe8B#
        • 2.d8S#
      • 1...Qc3
        • 2.d8S#
      • 1...Qb4
        • 2.dxe8Q#
        • 2.dxe8B#
        • 2.d8S#
      • 1...Qb6
        • 2.dxe8Q#
        • 2.dxe8B#
        • 2.d8S#
      • 1...Qc7
        • 2.d8S#
      • 1...Qd8
        • 2.exd8S#
      • 1...Qa1
        • 2.dxe8Q#
        • 2.dxe8B#
        • 2.d8S#
      • 1...Qa2
        • 2.dxe8Q#
        • 2.dxe8B#
        • 2.d8S#
      • 1...Qa3
        • 2.dxe8Q#
        • 2.dxe8B#
        • 2.d8S#
      • 1...Qa4
        • 2.d8S#
      • 1...Qb5
        • 2.d8S#
      • 1...Qc5
        • 2.d8S#
      • 1...Qa6
        • 2.d8S#
      • 1...Qa7
        • 2.d8S#
      • 1...Qa8
        • 2.d8S#
      • 1...Bg6
        • 2.d8S#
      • 1...Bf7
        • 2.d8Q#
        • 2.d8S#
        • 2.d8B#
        • 2.d8R#
      • 1...d3
        • 2.dxe8Q#
        • 2.dxe8B#
        • 2.d8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 1
  • Sets
    • K(e);N_SPINP(f),S_FLIGHT::S(A)
    • Q(b);OGATE::PXQ(b)=S
    • B(g);N_GUARD,SBLOCK::B(G),XP(f)
  • Tries
    • Try
      • B(G);CHECK,XP(f)
      • Vars
        • K(e);S_FLIGHT::S(A)
      • Refutation
        • B(g);XB(G)
  • Actual
    • P(D);XP(f)
    • Threat
      • DUALS(3)
    • Vars
      • K(e);S_FLIGHT::S(A)
      • B(g);N_GUARD,XP(C)::P=S
      • B(g);OGATE,P_SPINB(g),XP(D)::P=Q
      • Q(b);::P=S
      • Q(b);OGATE::PXQ(b)=S
      • B(g);N_GUARD::P=S
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