MESON Chess Problem Database

Problem Display
PID: 245500 (2R5/8/3Q2N1/5pkp/8/8/5K2/8 w - - 0 1)

Shumarin, Vladimir Pavlovich

Kudesnik, 2002

2R5/8/3Q2N1/5pkp/8/8/5K2/8

#2

4 + 3

5454 Near Snap 2001
15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kg4
      • 2.Qg3#
  • Tries
    • 1.Sh4?
      • 1...Kg4
        • 2.Qg3#
      • 1...Kxh4
        • 2.Qg3#
      • 1...f4!
    • 1.Qe7+?
      • 1...Kg4
        • 2.Qh4#
      • 1...Kxg6
        • 2.Rc6#
      • 1...Kh6!
    • 1.Qf6+?
      • 1...Kg4
        • 2.Qh4#
      • 1...Kh6
        • 2.Sf8#
        • 2.Rh8#
      • 1...Kxf6!
  • Keys
    • 1.Rg8!
      • 1...Kg4
        • 2.Qg3#
      • 1...Kh6
        • 2.Sf8#
      • 1...f4
        • 2.Qxf4#
      • 1...h4
        • 2.Sf4#

Anticipated by 10481(1965)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR1(B)
  • Tries
    • Try
      • S(C);
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
        • K(b);S_FLIGHT,XS(C)::QAB1(B)
      • Refutation
        • P(a);
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(B)
        • K(b);P-FLIGHT,XS(C)::R(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT,XQ(B)
  • Actual
    • R(D);
    • Vars
      • K(b);P-FLIGHT::QAR1(B)
      • K(b);S_FLIGHT::QAR(B)+S(C)
      • P(a);::QAB1(B),XP(a)
      • P(c);SBLOCK::R(D)+S(C)
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