MESON Chess Problem Database

Problem Display
PID: 243745 (r3kB2/pR1N4/Pp6/2PR2K1/B1Q5/8/2b5/8 w - - 0 1)

Berg, Wolfgang

Schach, 1985

r3kB2/pR1N4/Pp6/2PR2K1/B1Q5/8/2b5/8

#2

9 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kf7
      • 2.Re5#
    • 1...Kd8
      • 2.Sxb6#
    • 1...Rd8
      • 2.Re5#
  • Tries
    • 1.Bg7?
      • threat
        • 2.Sf6#
      • 1...Ke7
        • 2.Sf8#
      • 1...Kd8
        • 2.Sxb6#
      • 1...Kf7!
    • 1.Rb8+?
      • 1...Kf7
        • 2.Rd1#
        • 2.Rd2#
        • 2.Rd3#
        • 2.Rd4#
        • 2.Re5#
        • 2.Rf5#
        • 2.Rd6#
      • 1...Rxb8!
  • Keys
    • 1.Bh6!
      • threat
        • 2.Sf6#
      • 1...Ke7
        • 2.Sf8#
      • 1...Kf7
        • 2.Re5#
      • 1...Kd8
        • 2.Sxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(e);S_FLIGHT::QAB(B)+R(D)
    • K(e);P-FLIGHT::R(D)+S(H),XP(b)
    • R(d);SBLOCK::R(D)
  • Tries
    • Try
      • B(I);
      • Threat
        • B(A)+S(H),DCHECK
      • Vars
        • K(e);P-FLIGHT::R(G)+S(H)
        • K(e);P-FLIGHT::R(D)+S(H),XP(b)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • R(G);CHECK
      • Refutation
        • R(d);XR(G)
  • Actual
    • B(I);
    • Threat
      • B(A)+S(H),DCHECK
    • Vars
      • K(e);P-FLIGHT::R(G)+S(H)
      • K(e);S_FLIGHT::QAB(B)+R(D)
      • K(e);P-FLIGHT::R(D)+S(H),XP(b)
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