MESON Chess Problem Database

Problem Display
PID: 103250 (8/5B2/1Q6/8/1N2k3/7P/2R4K/8 w - - 0 1)

Shumarin, Vladimir Pavlovich

Kudesnik, 2000

8/5B2/1Q6/8/1N2k3/7P/2R4K/8

#2

6 + 1

6490 yacpdb 2009
5454 Near Snap 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Re2+?
      • 1...Kf3
        • 2.Qf2#
        • 2.Qe3#
      • 1...Kf4
        • 2.Qf6#
      • 1...Kf5!
    • 1.Rc4+?
      • 1...Kf3
        • 2.Bh5#
      • 1...Ke5
        • 2.Qe6#
      • 1...Kf5!
    • 1.Qe3+?
      • 1...Kf5
        • 2.Rf2#
      • 1...Kxe3!
    • 1.Qd4+?
      • 1...Kf3
        • 2.Bd5#
        • 2.Bh5#
        • 2.Rf2#
      • 1...Kf5
        • 2.Rc5#
      • 1...Kxd4!
  • Keys
    • 1.Sd3!
      • 1...Kxd3
        • 2.Bg6#
      • 1...Kf3
        • 2.Bd5#
      • 1...Kf5
        • 2.Qg6#

This anticipates 153221(2011)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);CHECK
      • Vars
        • K(a);S_FLIGHT::B(F)
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);S_FLIGHT::R(A)
      • Refutation
        • K(a);P-FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);S_FLIGHT::R(A)
      • Refutation
        • K(a);P-FLIGHT,XQ(E)
  • Actual
    • S(D);
    • Vars
      • K(a);S_FLIGHT,XS(D)::B(F)
      • K(a);S_FLIGHT::B(F)
      • K(a);S_FLIGHT::QAB1(E)
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