MESON Chess Problem Database

Problem Display
PID: 175043 (8/p7/P7/k1n5/pN3Q2/N7/K7/8 w - - 0 1)

Galitzky, Aleksandr Vasilevich

Philadelphia Times, 1901

8/p7/P7/k1n5/pN3Q2/N7/K7/8

#2

5 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qe5?
      • threat
        • 2.Qxc5#
      • 1...Kxb4
        • 2.Qe1#
      • 1...Kb6!
    • 1.Qc4?
      • threat
        • 2.Qb5#
        • 2.Qxc5#
      • 1...Sxa6
        • 2.Qb5#
      • 1...Sb3
        • 2.Qb5#
      • 1...Sd3
        • 2.Qb5#
      • 1...Se4
        • 2.Qb5#
      • 1...Se6
        • 2.Qb5#
      • 1...Sb7
        • 2.Qb5#
      • 1...Sd7
        • 2.Qb5#
      • 1...Kb6!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Qxc5#
      • 1...Kxb4
        • 2.Qd2#
      • 1...Kb6
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);P_PINS(c)
      • Threat
        • QAR2(D),XS(c)
      • Vars
        • K(b);N_SPINS(c),OGATEB,S_FLIGHT,XS(C)::QAB(D)
      • Refutation
        • K(b);N_SPINS(c),S_FLIGHT
    • Try
      • Q(D);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);XP(E)::QAR1(D)
        • S(c);::QAR1(D)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(D);P_PINS(c)
    • Threat
      • QAR2(D),XS(c)
    • Vars
      • K(b);N_SPINS(c),OGATEB,S_FLIGHT,XS(C)::QAB(D)
      • K(b);N_SPINS(c),S_FLIGHT::QAB(D)
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