MESON Chess Problem Database

Problem Display
PID: 85094 (3bq3/8/Q2N4/p1P2R2/pkN1p3/5b1R/1P3p2/K2B2Bn w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Probleemblad, 1993

3bq3/8/Q2N4/p1P2R2/pkN1p3/5b1R/1P3p2/K2B2Bn

#2

10 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qb5
      • 2.Qxb5#
    • 1...Qh5
      • 2.Qb5#
    • 1...Qg6
      • 2.Qb5#
    • 1...Qf7
      • 2.Qb5#
    • 1...Qe5
      • 2.Qb5#
    • 1...Qe6
      • 2.Qb5#
    • 1...Qe7
      • 2.Qb5#
    • 1...Qf8
      • 2.Qb5#
    • 1...Qg8
      • 2.Qb5#
    • 1...Qh8
      • 2.Qb5#
    • 1...Bh4
      • 2.Qxa5#
    • 1...Bg5
      • 2.Qxa5#
    • 1...Bf6
      • 2.Qxa5#
    • 1...Be7
      • 2.Qxa5#
  • Tries
    • 1.Sb6?
      • threat
        • 2.Qc4#
      • 1...f1Q
        • 2.Sd5#
      • 1...f1B
        • 2.Sd5#
      • 1...Qb5
        • 2.Qxb5#
      • 1...Qf7
        • 2.Qb5#
      • 1...Qe6
        • 2.Qb5#
      • 1...Qg8
        • 2.Qb5#
      • 1...Be2!
    • 1.Bxf2?
      • threat
        • 2.Be1#
      • 1...Qe5
        • 2.Qb5#
      • 1...Qh8
        • 2.Qb5#
      • 1...Bh4
        • 2.Qxa5#
      • 1...Bg5
        • 2.Qxa5#
      • 1...Bf6
        • 2.Qxa5#
      • 1...Sxf2!
    • 1.Qb7+?
      • 1...Qb5
        • 2.Qxb5#
      • 1...Bb6!
    • 1.Qb6+?
      • 1...Qb5
        • 2.Qxb5#
      • 1...Bxb6!
  • Keys
    • 1.Se3!
      • threat
        • 2.Qc4#
      • 1...f1Q
        • 2.Sd5#
      • 1...f1B
        • 2.Sd5#
      • 1...Qb5
        • 2.Qxb5#
      • 1...Qf7
        • 2.Qb5#
      • 1...Qe6
        • 2.Qb5#
      • 1...Qg8
        • 2.Qb5#
      • 1...Be2
        • 2.Sc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 10
  • Sets
    • Q(i);N_GUARD::QAR1(I),XQ(i)
    • Q(i);N_GUARD::QAR1(I)
    • Q(i);N_GUARD,P_PINP(D)::QAR1(I)
    • B(h);N_GUARD::QAB1(I),XP(g)
    • B(h);N_GUARD,P_PINP(D)::QAB1(I),XP(g)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAR1(I)
      • Vars
        • P(b);P_PINB(B)::S(F)
        • P(b);::S(F)
        • Q(i);N_GUARD::QAR1(I),XQ(i)
        • Q(i);N_GUARD::QAR1(I)
      • Refutation
        • B(c);
    • Try
      • B(C);XP(b)
      • Threat
        • B(C)
      • Vars
        • Q(i);N_GUARD,P_PINP(D)::QAR1(I)
        • B(h);N_GUARD::QAB1(I),XP(g)
        • B(h);N_GUARD,P_PINP(D)::QAB1(I),XP(g)
      • Refutation
        • S(a);XB(C)
    • Try
      • Q(I);CHECK
      • Vars
        • Q(i);N_GUARD,P_SPINQ(i)::QAR1(I),XQ(i)
      • Refutation
        • B(h);P_SPINB(h)
    • Try
      • Q(I);CHECK
      • Vars
        • Q(i);N_GUARD,P_SPINQ(i)::QAR1(I),XQ(i)
      • Refutation
        • B(h);XQ(I)
  • Actual
    • S(F);
    • Threat
      • QAR1(I)
    • Vars
      • P(b);P_PINB(B)::S(F)
      • P(b);::S(F)
      • Q(i);N_GUARD::QAR1(I),XQ(i)
      • Q(i);N_GUARD::QAR1(I)
      • B(c);::S(F)
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