MESON Chess Problem Database

Problem Display
PID: 129851 (8/8/pn6/k3B3/1nP5/1P6/3Q4/1K6 w - - 0 1)

Palkoska, Emil

Narodni Politika, 1913

8/8/pn6/k3B3/1nP5/1P6/3Q4/1K6

#2

5 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bd6?
      • threat
        • 2.Bxb4#
        • 2.Qxb4#
      • 1...Sxc4
        • 2.Qxb4#
      • 1...Sa4
        • 2.Qxb4#
      • 1...Sd7
        • 2.Qxb4#
      • 1...Sa8
        • 2.Qxb4#
      • 1...Sc8
        • 2.Qxb4#
      • 1...Sd5!
    • 1.Qa2+?
      • 1...Sa4
        • 2.Bc7#
      • 1...Sxa2!
  • Keys
    • 1.Qg5!
      • 1...Sxc4
        • 2.Bc7#
      • 1...Sa2
        • 2.Bc3#
      • 1...Sc2
        • 2.Bc3#
      • 1...Sd3
        • 2.Bc3#
      • 1...S4d5
        • 2.Bc3#
      • 1...Sc6
        • 2.Bc3#
      • 1...Sa4
        • 2.Bc7#
      • 1...S6d5
        • 2.Bc7#
      • 1...Sd7
        • 2.Bc7#
      • 1...Sa8
        • 2.Bc7#
      • 1...Sc8
        • 2.Bc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(E);
      • Threat
        • DUALS(2)
      • Vars
        • S(d);XP(D)::QAB1(B),XS(a)
        • S(d);::QAB1(B),XS(a)
      • Refutation
        • S(d);
    • Try
      • Q(B);CHECK,N_PINS(a)
      • Vars
        • S(d);P_SPINS(d),S_CUTS(a)::B(E)
      • Refutation
        • S(a);XQ(B)
  • Actual
    • Q(B);N_PINS(a)
    • Vars
      • S(d);XP(D)::QAR(B)+B(E),DCHECK
      • S(a);::QAR(B)+B(E),DCHECK
      • S(a);S_CUTS(d)::B(E)
      • S(d);::QAR(B)+B(E),DCHECK
      • S(d);S_CUTS(a)::B(E)
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