MESON Chess Problem Database

Problem Display
PID: 251877 (q2n4/Nn2N3/1b4p1/r1k2bQ1/rR1R3K/1P2P3/5B2/8 w - - 0 1)

Schneider, Michael

3rd Prize, Schach, 1979

q2n4/Nn2N3/1b4p1/r1k2bQ1/rR1R3K/1P2P3/5B2/8

#2

9 + 9

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Rbc4#
    • 1...Ra2
      • 2.Rbc4#
    • 1...Ra3
      • 2.Rbc4#
    • 1...Rb5
      • 2.Rxb5#
    • 1...Ra6
      • 2.Rb5#
  • Tries
    • 1.Be1?
      • threat
        • 2.Rd5#
      • 1...Rxb4
        • 2.Bxb4#
      • 1...Sd6!
    • 1.Bg3?
      • threat
        • 2.Rdc4#
      • 1...Sd6
        • 2.Bxd6#
      • 1...Rxb4!
  • Keys
    • 1.e4!
      • threat
        • 2.Qc1#
      • 1...Rxb4
        • 2.Rd5#
      • 1...Ra1
        • 2.Rbc4#
      • 1...Ra2
        • 2.Rbc4#
      • 1...Sd6
        • 2.Rdc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(a);N_GUARD::R1(D)
    • R(b);N_GUARD::R1(D),XR(b)
    • R(b);N_GUARD::R1(D)
  • Tries
    • Try
      • B(A);
      • Threat
        • R1(E)
      • Vars
        • R(a);OGATE,P_PINR(E),XR(D)::B(A),XR(a)
      • Refutation
        • S(g);
    • Try
      • B(A);
      • Threat
        • R1(E)
      • Vars
        • S(g);N_GUARD::B(A),XS(g)
      • Refutation
        • R(a);P_PINR(E),XR(D)
  • Actual
    • P(C);
    • Threat
      • QAR(G)
    • Vars
      • R(a);SBLOCK,XR(D)::B(A)+R(E),DCHECK
      • R(a);N_GUARD::R1(D)
      • S(g);SBLOCK::B(A)+R(E),DCHECK
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