MESON Chess Problem Database

Problem Display
PID: 99066 (1bn4B/8/8/Np2p1p1/bP4R1/P1k2P1R/2P4K/2Q5 w - - 0 1)

Bruchner, Siegfried

Magyar Sakkelet, 1989

1bn4B/8/8/Np2p1p1/bP4R1/P1k2P1R/2P4K/2Q5

#2

10 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sd6
      • 2.Bxe5#
  • Tries
    • 1.Rg2?
      • threat
        • 2.Qa1#
      • 1...Kd4
        • 2.Qd2#
      • 1...Bxc2!
    • 1.Re4?
      • threat
        • 2.f4#
      • 1...g4
        • 2.fxg4#
      • 1...Ba7!
  • Keys
    • 1.Rd4!
      • threat
        • 2.Rd3#
      • 1...exd4+
        • 2.f4#
      • 1...e4+
        • 2.Rd6#
      • 1...Kxd4
        • 2.Qd2#
      • 1...Bxc2
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • S(g);S_CUTB(f)::B(J),XP(d)
  • Tries
    • Try
      • R(H);
      • Threat
        • QAB(A)
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • B(b);P_SPINB(b),XP(B)
    • Try
      • R(H);
      • Threat
        • R(F)+P(E)
      • Vars
        • P(e);OGATE::R(F)+P(E),XP(e)
      • Refutation
        • B(f);
  • Actual
    • R(H);N_PINP(d)
    • Threat
      • R1(H)
    • Vars
      • P(d);CHECK,P_SPINP(d),XR(H)::R(F)+P(E)
      • P(d);CHECK,OGATEB::B(J)+R(H)
      • K(a);P_SPINP(d),S_FLIGHT,XR(H)::QAR2(A)
      • B(b);P_SPINB(b),SBLOCK,XP(B)::QAB(A)
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