MESON Chess Problem Database

Problem Display
PID: 232947 (n1Q5/8/pk6/8/1NB5/1K6/8/8 w - - 0 1)

Grassano, Carlos A

Kudesnik, 2013

n1Q5/8/pk6/8/1NB5/1K6/8/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ka5
      • 2.Qxa6#
      • 2.Qc5#
  • Tries
    • 1.Sd5+?
      • 1...Ka5
        • 2.Qxa6#
        • 2.Qc5#
      • 1...Ka7!
    • 1.Bxa6?
      • 1...Ka5
        • 2.Qc5#
      • 1...Ka7
        • 2.Qb7#
      • 1...Sc7!
    • 1.Qc6+?
      • 1...Ka5
        • 2.Qc5#
        • 2.Qxa6#
      • 1...Ka7!
    • 1.Qb8+?
      • 1...Ka5
        • 2.Sc6#
      • 1...Kc5!
  • Keys
    • 1.Sxa6!
      • 1...Ka5
        • 2.Qc5#
      • 1...Ka7
        • 2.Qb8#
      • 1...Sc7
        • 2.Qxc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(C);XP(a)
      • Vars
        • K(b);S_FLIGHT::QAR2(D)
        • K(b);S_FLIGHT::QAR1(D)
      • Refutation
        • S(c);
    • Try
      • Q(D);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(b);S_FLIGHT::S(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(B);XP(a)
    • Vars
      • K(b);S_FLIGHT::QAR2(D)
      • K(b);S_FLIGHT::QAB1(D)
      • S(c);N_GUARD::QAB1(D),XS(c)
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