MESON Chess Problem Database

Problem Display
PID: 197913 (6K1/1B1pNN2/3r2p1/1q1b4/4kp2/8/2PQ2P1/8 w - - 0 1)

Hadzi-Vaskov, Georgi

Stella Polaris, 1966

6K1/1B1pNN2/3r2p1/1q1b4/4kp2/8/2PQ2P1/8

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qd3
      • 2.Qxd3#
    • 1...Qa4
      • 2.Qd3#
    • 1...Qc6
      • 2.Qd3#
    • 1...Qb1
      • 2.Qd3#
    • 1...Qb2
      • 2.Qd3#
    • 1...Qb4
      • 2.Qd3#
    • 1...Qa5
      • 2.Qd3#
    • 1...Qc5
      • 2.Qd3#
    • 1...Qb6
      • 2.Qd3#
    • 1...Qxb7
      • 2.Qd3#
  • Keys
    • 1.Qc3!
      • threat
        • 2.Qe5#
      • 1...Bxb7
        • 2.Sxd6#
      • 1...Qb2
        • 2.Qd3#
      • 1...Re6
        • 2.Sg5#
      • 1...Bc6
        • 2.Sxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • Q(c);N_GUARD::QAB1(B),XQ(c)
    • Q(c);N_GUARD::QAB1(B)
    • Q(c);N_GUARD,N_SPINB(d)::QAB1(B)
    • Q(c);N_GUARD,N_SPINB(d),XB(D)::QAB1(B)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • B(d);N_PINS(F),N_SPINB(d),XB(D)::S(F),XR(e)
      • Q(c);N_GUARD::QAB1(B)
      • R(e);N_PINS(F)::S(F)
      • B(d);N_PINS(F)::S(F),XR(e)
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