MESON Chess Problem Database

Problem Display
PID: 227984 (8/b2N2K1/1p1p3R/N2k1bQ1/1P5R/8/6r1/6rB w - - 0 1)

Muller, Dieter

1st HM., Kieler Schachgesellschaft, 1970

8/b2N2K1/1p1p3R/N2k1bQ1/1P5R/8/6r1/6rB

#2

8 + 7

16882 KSG-Problemschach 1969-1987 (Muck/Laue) 1993

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Bxg2#
    • 1...Rb1
      • 2.Bxg2#
    • 1...Rc1
      • 2.Bxg2#
    • 1...Rd1
      • 2.Bxg2#
  • Tries
    • 1.Sxb6+?
      • 1...Ke5
        • 2.Sac4#
        • 2.Sc6#
      • 1...Bxb6!
    • 1.Sf6+?
      • 1...Ke5
        • 2.Re4#
      • 1...Ke6!
  • Keys
    • 1.Qg3!
      • threat
        • 2.Rxd6#
      • 1...Bg4
        • 2.Qd3#
      • 1...Bg6
        • 2.Qb3#
      • 1...Be6
        • 2.Sf6#
      • 1...Bb8
        • 2.Sxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(a);N_GUARD::B(A),XR(b)
  • Tries
    • Try
      • S(G);CHECK,XP(e)
      • Refutation
        • B(g);XS(G)
    • Try
      • S(G);CHECK
      • Vars
        • K(c);N_SPINR(b),P-FLIGHT::R1(C)
      • Refutation
        • K(c);N_SPINB(d),N_SPINR(b),S_FLIGHT
  • Actual
    • Q(E);N_PINB(d)
    • Threat
      • R1(F),XP(f)
    • Vars
      • B(d);N_PINQ(E)::QAR2(E)
      • B(d);N_PINQ(E)::QAB(E)
      • B(d);SBLOCK::S(G)
      • B(g);N_GUARD::S(G),XP(e)
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