MESON Chess Problem Database

Problem Display
PID: 284097 (8/pRB1K3/k1P1Q3/Nb2P3/8/1Pr5/4q3/R4B2 w - - 0 1)

Vasilenko, Anatoly Grigorovich

Zaragoza-65 JT (Problemas), 2025

8/pRB1K3/k1P1Q3/Nb2P3/8/1Pr5/4q3/R4B2

#2

10 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Bxb5#
    • 1...Qf3
      • 2.Bxb5#
    • 1...Qg4
      • 2.Bxb5#
    • 1...Qh5
      • 2.Bxb5#
    • 1...Qe1
      • 2.Bxb5#
    • 1...Qa2
      • 2.Bxb5#
    • 1...Qb2
      • 2.Bxb5#
    • 1...Qc2
      • 2.Bxb5#
    • 1...Qd2
      • 2.Bxb5#
    • 1...Qf2
      • 2.Bxb5#
    • 1...Qg2
      • 2.Bxb5#
    • 1...Qh2
      • 2.Bxb5#
    • 1...Qe3
      • 2.Bxb5#
    • 1...Qe4
      • 2.Bxb5#
  • Tries
    • 1.Sc4+?
      • 1...Ba4
        • 2.Rxa4#
      • 1...Qa2!
    • 1.Qc8?
      • threat
        • 2.Rb6#
        • 2.Rb8#
      • 1...Bxc6
        • 2.Sxc6#
        • 2.Rb6#
      • 1...Qg4
        • 2.Bxb5#
        • 2.Rb6#
      • 1...Qa2
        • 2.Bxb5#
        • 2.Rxb5#
        • 2.Rb8#
      • 1...Ba4
        • 2.Rb4#
        • 2.Rb8#
      • 1...Qxe5+!
  • Keys
    • 1.Rb8!
      • threat
        • 2.Qc8#
      • 1...Qxe5
        • 2.Sb7#
      • 1...Bxc6
        • 2.Sxc6#
      • 1...Qg4
        • 2.Bxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 13
  • Sets
    • Q(a);OGATE,P_SPINB(c)::B(B),XB(c)
    • Q(a);OGATE,P_SPINB(c),SBLOCK::B(B),XB(c)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::R(A),XB(c)
      • Refutation
        • Q(a);P_SPINQ(a)
    • Try
      • Q(G);P_SPINP(E)
      • Threat
        • DUALS(2)
      • Refutation
        • Q(a);CHECK,P_SPINB(c),XP(E)
  • Actual
    • R(H);
    • Threat
      • QAB(G)
    • Vars
      • Q(a);N_GUARD,P_PINQ(G),P_SPINB(c),XP(E)::R(A)+S(D)
      • B(c);P_SPINB(c),P_SPINQ(a),XP(F)::R(A)+S(D),XB(c)
      • Q(a);OGATE,P_SPINB(c)::B(B),XB(c)
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