MESON Chess Problem Database

Problem Display
PID: 109499 (2K5/1QP5/p7/k7/Pn6/b7/B7/RRN5 w - - 0 1)

Taraba, Jozef

UV CSTV, 1967

2K5/1QP5/p7/k7/Pn6/b7/B7/RRN5

#2

8 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc1
      • 2.Qxb4#
  • Tries
    • 1.Rxb4?
      • threat
        • 2.Sb3#
        • 2.Qb6#
      • 1...Bxc1
        • 2.Qb6#
      • 1...Bxb4!
    • 1.Qb6+?
      • 1...Kxa4
        • 2.Bb3#
      • 1...Kxb6!
  • Keys
    • 1.Bc4!
      • 1...Kxa4
        • 2.Qxb4#
      • 1...Bxc1
        • 2.Qxb4#
      • 1...Bb2
        • 2.Sb3#
      • 1...Sa2
        • 2.Qxa6#
      • 1...Sc2
        • 2.Qxa6#
      • 1...Sd3
        • 2.Qxa6#
      • 1...Sd5
        • 2.Qxa6#
      • 1...Sc6
        • 2.Qxa6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD,XS(C)::QAB1(F),XS(b)
  • Tries
    • Try
      • R(B);XS(b)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XS(C)::QAB1(F)
      • Refutation
        • B(a);XR(B)
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);P-FLIGHT,XP(E)::B(D)
      • Refutation
        • K(c);P_SPINS(b),S_FLIGHT,XQ(F)
  • Actual
    • B(D);
    • Vars
      • K(c);P-FLIGHT,P_SPINB(a),XP(E)::QAR1(F),XS(b)
      • B(a);N_GUARD,XS(C)::QAB1(F),XS(b)
      • B(a);::S(C)
      • S(b);N_GUARD::QAR1(F),XP(d)
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