MESON Chess Problem Database

Problem Display
PID: 237439 (1bR4K/3N3B/1pp2R2/3k4/2n5/8/Q3N3/1n1r3b w - - 0 1)

Labai, Zoltan

Buletin Problemistic, 2002

1bR4K/3N3B/1pp2R2/3k4/2n5/8/Q3N3/1n1r3b

#2

7 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Bg8#
    • 1...c5
      • 2.Qa8#
  • Tries
    • 1.Re8?
      • threat
        • 2.Bg8#
      • 1...Be5
        • 2.Rxe5#
      • 1...Rg1!
    • 1.Qa4?
      • threat
        • 2.Qxc6#
      • 1...Sa5
        • 2.Bg8#
      • 1...Se5
        • 2.Sf4#
      • 1...c5
        • 2.Qc6#
        • 2.Qa8#
      • 1...b5!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Bg8#
      • 1...Rg1
        • 2.Qd3#
      • 1...Rd3
        • 2.Qxd3#
      • 1...Se5
        • 2.Sxb6#
      • 1...Sd6
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • B(c);SBLOCK::B(E)
    • P(g);OGATEB::QAB(A)
  • Tries
    • Try
      • R(F);
      • Threat
        • B(E)
      • Vars
        • B(h);N_GUARD,P_PINR(C)::R1(F),XB(h)
      • Refutation
        • R(b);
    • Try
      • Q(A);N_PINS(d)
      • Threat
        • QAB1(A),XP(g)
      • Vars
        • S(d);::B(E)
        • S(d);S_CUTB(h)::S(B)
      • Refutation
        • P(f);
  • Actual
    • Q(A);N_PINS(d)
    • Threat
      • B(E)
    • Vars
      • R(b);N_GUARD::QAR2(A)
      • R(b);N_GUARD::QAR2(A),XR(b)
      • S(d);N_GUARD,SBLOCK::S(D),XP(f)
      • S(d);OGATE::QAB1(A),XP(g)
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