MESON Chess Problem Database

Problem Display
PID: 243765 (1b2R1q1/3N2B1/R3r3/N2k1p2/3P3Q/4p1P1/6K1/8 w - - 0 1)

Berg, Wolfgang

Hlas l'udu, 1988

(First published on Thu Feb 4 1988)

1b2R1q1/3N2B1/R3r3/N2k1p2/3P3Q/4p1P1/6K1/8

#2

9 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Sf6#
    • 1...Rd6
      • 2.Re5#
    • 1...Rf6
      • 2.Sxf6#
    • 1...Re7
      • 2.Sf6#
    • 1...Rxe8
      • 2.Sf6#
    • 1...Bd6
      • 2.Sb6#
  • Tries
    • 1.Sb6+?
      • 1...Kd6
        • 2.Qd8#
      • 1...Rxb6!
    • 1.Rd6+?
      • 1...Rxd6
        • 2.Re5#
      • 1...Bxd6
        • 2.Sb6#
      • 1...Kxd6!
  • Keys
    • 1.Qd8!
      • threat
        • 2.Sf6#
      • 1...Ke4
        • 2.Sc5#
      • 1...Rd6
        • 2.Sb6#
      • 1...Rf6
        • 2.Sb6#
        • 2.Sxf6#
      • 1...Bd6
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • R(d);N_GUARD::S(G)
    • R(d);OGATE::R1(I)
    • R(d);N_GUARD::S(G),XR(d)
    • R(d);N_GUARD,XR(I)::S(G)
    • B(e);SBLOCK,S_CUTR(d)::S(G)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(D)
      • Refutation
        • R(d);XS(G)
    • Try
      • R(F);CHECK
      • Vars
        • R(d);OGATE,SBLOCK,XR(F)::R1(I)
        • B(e);SBLOCK,XR(F)::S(G)
      • Refutation
        • K(b);P-FLIGHT,XR(F)
  • Actual
    • Q(D);
    • Threat
      • QAR(D)+S(G),DCHECK
    • Vars
      • K(b);P_SPINR(d),S_FLIGHT::S(G)
      • R(d);::S(G)
      • B(e);OGATE::QAB(D)
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