MESON Chess Problem Database

Problem Display
PID: 254528 (2B2n1Q/K3p3/3p4/1N1kP3/8/2RP4/5p1b/1b6 w - - 0 1)

Roosendaal, Jan C

Probleemblad, 1983

2B2n1Q/K3p3/3p4/1N1kP3/8/2RP4/5p1b/1b6

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe5
      • 2.Qh1#
    • 1...Se6
      • 2.Bb7#
    • 1...e6
      • 2.Bb7#
  • Tries
    • 1.Qg8+?
      • 1...Kxe5
        • 2.Qg5#
      • 1...Se6
        • 2.Qxe6#
      • 1...e6!
  • Keys
    • 1.e6!
      • threat
        • 2.Sc7#
        • 2.Qd4#
      • 1...Bxd3
        • 2.Qd4#
      • 1...Sxe6
        • 2.Bb7#
      • 1...Sd7
        • 2.Sc7#
      • 1...Be5
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(c);OGATE,SBLOCK,XP(D)::QAB(G)
    • S(g);SBLOCK::B(F)
    • P(f);SBLOCK::B(F)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • K(d);OGATEB,P-FLIGHT,XP(D)::QAR2(G)
        • S(g);N_GUARD,P_SPINS(g)::QAB1(G),XS(g)
      • Refutation
        • P(f);P_SPINP(f)
  • Actual
    • P(D);
    • Threat
      • DUALS(2)
    • Vars
      • B(a);XP(B)::QAR1(G)
      • S(g);SBLOCK,XP(D)::B(F)
      • S(g);::S(C)
      • B(c);OGATE,SBLOCK::QAB(G)
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