MESON Chess Problem Database

Problem Display
PID: 94518 (K7/3Q4/N2p4/3kp1P1/8/5P2/4P3/8 w - - 0 1)

Beck, Antonin

Ceske Granaty, 1897

K7/3Q4/N2p4/3kp1P1/8/5P2/4P3/8

#2

6 + 3

6490 yacpdb 2009
5454 Near Snap 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qa4?
      • 1...e4
        • 2.Qxe4#
      • 1...Ke6!
    • 1.Qg4?
      • 1...e4
        • 2.Qxe4#
      • 1...Kc6!
    • 1.Qb5+?
      • 1...Kd4
        • 2.Qd3#
      • 1...Ke6!
    • 1.Qf5?
      • 1...Kc4
        • 2.Qd3#
      • 1...Kd4
        • 2.Qd3#
      • 1...Kc6!
    • 1.Qxd6+?
      • 1...Kc4
        • 2.Qd3#
      • 1...Kxd6!
    • 1.Qf7+?
      • 1...Kc6
        • 2.Qb7#
      • 1...Kd4!
  • Keys
    • 1.Qh7!
      • 1...Kc4
        • 2.Qd3#
      • 1...Kd4
        • 2.Qd3#
      • 1...Kc6
        • 2.Qb7#
      • 1...Ke6
        • 2.Sc7#
      • 1...e4
        • 2.Qxe4#

Anticipated by 93839(1896)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);N_PINP(c)
      • Vars
        • P(b);::QAB1(E),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);N_PINP(c)
      • Vars
        • P(b);::QAB1(E),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK,N_PINP(c)
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);N_PINP(c),P_PINP(b)
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::QAB1(E)
        • K(a);N_SPINP(b),P-FLIGHT::QAR1(E)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • Q(E);CHECK,XP(c)
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK,N_PINP(c)
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(E);N_PINP(c)
    • Vars
      • K(a);S_FLIGHT::QAB1(E)
      • K(a);P-FLIGHT::QAR1(E)
      • K(a);S_FLIGHT::S(D)
      • P(b);::QAB1(E),XP(b)
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