MESON Chess Problem Database

Problem Display
PID: 245999 (8/3Q4/3R4/1Np5/1pk5/8/8/2K5 w - - 0 1)

Shumarin, Vladimir Pavlovich

Sem Shakhmatnikh not, 2017

8/3Q4/3R4/1Np5/1pk5/8/8/2K5

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Re6?
      • 1...b3
        • 2.Re4#
      • 1...Kb3!
    • 1.Rf6?
      • 1...b3
        • 2.Rf4#
      • 1...Kb3!
    • 1.Rg6?
      • 1...b3
        • 2.Rg4#
      • 1...Kb3!
    • 1.Rh6?
      • 1...b3
        • 2.Rh4#
      • 1...Kb3!
    • 1.Qc6?
      • 1...b3
        • 2.Rd4#
      • 1...Kb3!
    • 1.Qa7?
      • 1...Kxb5
        • 2.Qa6#
      • 1...b3
        • 2.Qa4#
      • 1...Kb3!
  • Keys
    • 1.Ra6!
      • 1...Kb3
        • 2.Qd3#
      • 1...b3
        • 2.Ra4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);
      • Vars
        • P(a);SBLOCK::R(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • P(a);SBLOCK::R(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • P(a);SBLOCK::R(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • P(a);SBLOCK::R(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(D);P_PINP(c)
      • Vars
        • P(a);SBLOCK::R1(C)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(B)::QAB1(D)
        • P(a);OGATEB::QAR2(D)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(C);
    • Vars
      • K(b);S_FLIGHT::QAR2(D)
      • P(a);OGATEB,SBLOCK::R(C)
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