MESON Chess Problem Database

Problem Display
PID: 164630 (8/3Q4/8/3p4/3kN3/8/2KN4/8 w - - 0 1)

Cherivic, Vassily

Zadachi i Etyudi, 2014

8/3Q4/8/3p4/3kN3/8/2KN4/8

#2

4 + 2

5454 Near Snap 2017
3713 Snap 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Qf5?
      • 1...Ke3
        • 2.Qf2#
      • 1...dxe4!
    • 1.Qf7?
      • 1...Ke3
        • 2.Qf2#
      • 1...Ke5
        • 2.Qf6#
      • 1...dxe4!
    • 1.Qd8?
      • 1...Ke5
        • 2.Qf6#
      • 1...Ke3!
  • Keys
    • 1.Sc4!
      • 1...Kxc4
        • 2.Qa4#
      • 1...Kxe4
        • 2.Qg4#

Anticipated by 56675(1923), 157070(1955), 10797(1968), 173964(2005)

This anticipates 163268(2017)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);N_PINP(b)
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
      • Refutation
        • P(b);XS(C)
    • Try
      • Q(D);N_PINP(b)
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
      • Refutation
        • P(b);XS(C)
    • Try
      • Q(D);
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::QAB1(D)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
  • Actual
    • S(B);
    • Vars
      • K(a);N_SPINP(b),OGATEB,P-FLIGHT,XS(B)::QAR2(D)
      • K(a);N_SPINP(b),OGATEB,P-FLIGHT,XS(C)::QAR2(D)
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