MESON Chess Problem Database

Problem Display
PID: 245492 (1K1k2q1/8/5N2/6N1/RB6/8/8/8 w - - 0 1)

Shumarin, Vladimir Pavlovich

Kudesnik, 2001

1K1k2q1/8/5N2/6N1/RB6/8/8/8

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6
      • 2.Sxe6#
    • 1...Qf7
      • 2.Sxf7#
    • 1...Qh7
      • 2.Se6#
    • 1...Qg6
      • 2.Se6#
    • 1...Qg7
      • 2.Se6#
    • 1...Qf8
      • 2.Se6#
    • 1...Qh8
      • 2.Se6#
      • 2.Sf7#
  • Keys
    • 1.Ra7!
      • threat
        • 2.Ba5#
        • 2.Be7#
        • 2.Rd7#
      • 1...Qxg5
        • 2.Be7#
        • 2.Rd7#
      • 1...Qa2
        • 2.Be7#
        • 2.Rd7#
      • 1...Qb3
        • 2.Rd7#
      • 1...Qc4
        • 2.Be7#
        • 2.Rd7#
      • 1...Qd5
        • 2.Be7#
      • 1...Qe6
        • 2.Sxe6#
      • 1...Qf7
        • 2.Sxf7#
      • 1...Qh7
        • 2.Se6#
      • 1...Qg7
        • 2.Se6#
      • 1...Qe8
        • 2.Ba5#
      • 1...Qf8
        • 2.Se6#
        • 2.Ba5#
        • 2.Rd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • Q(b);N_GUARD::S(C),XQ(b)
    • Q(b);N_GUARD::S(C)
  • Actual
    • R(A);
    • Threat
      • DUALS(3)
    • Vars
      • Q(b);P_PINB(B)::R1(A)
      • Q(b);::B(B)
      • Q(b);N_GUARD::S(C),XQ(b)
      • Q(b);N_GUARD::S(C)
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