MESON Chess Problem Database

Problem Display
PID: 58977 (nB6/8/p2Kp3/kP1pR3/N2Q4/2p1R3/n1B5/8 w - - 0 1)

Onkoud, Abdelaziz

Troll, 1998

nB6/8/p2Kp3/kP1pR3/N2Q4/2p1R3/n1B5/8

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kxb5
      • 2.Qc5#
  • Tries
    • 1.b6?
      • threat
        • 2.Qc5#
      • 1...Kb5
        • 2.Qc5#
      • 1...Sc7!
  • Keys
    • 1.R3e4!
      • 1...Kxb5
        • 2.Qc5#
      • 1...dxe4
        • 2.b6#
      • 1...axb5
        • 2.Qa7#
      • 1...Sc1
        • 2.Qb4#
      • 1...Sb4
        • 2.Qxb4#
      • 1...Sb6
        • 2.Qxb6#
      • 1...Sc7
        • 2.Qb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(c);OGATEB,P-FLIGHT,P_SPINP(d),XP(E)::QAR1(D)
  • Tries
    • Try
      • P(E);P_PINP(d)
      • Threat
        • QAR2(D)
      • Vars
        • K(c);P-FLIGHT::QAR1(D)
      • Refutation
        • S(g);
  • Actual
    • R(B);
    • Vars
      • K(c);OGATEB,P-FLIGHT,P_SPINP(d),XP(E)::QAR1(D)
      • P(d);XR(B)::R(F)+P(E)
      • P(e);OGATEB,SBLOCK,XP(E)::QAR2(D)
      • S(a);N_GUARD::QAB1(D)
      • S(a);N_GUARD::QAB1(D),XS(a)
      • S(g);N_GUARD::QAB1(D),XS(g)
      • S(g);N_GUARD::QAB1(D)
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