MESON Chess Problem Database

Problem Display
PID: 118882 (5r2/2B3p1/3R4/1p2k3/1p5P/3PN1nn/1K2p1Np/7Q w - - 0 1)

Udartsev, Valentin Filipovich

Canadian Chess Chat, 1981

5r2/2B3p1/3R4/1p2k3/1p5P/3PN1nn/1K2p1Np/7Q

#2

8 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5
      • 2.Sg4#
    • 1...Se4
      • 2.d4#
    • 1...Sf5
      • 2.Sg4#
  • Tries
    • 1.Qb1?
      • threat
        • 2.d4#
      • 1...Sf5
        • 2.Sg4#
      • 1...Rf4!
    • 1.Qc1?
      • threat
        • 2.Qc5#
      • 1...Se4
        • 2.d4#
      • 1...Sf4!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Sg6#
      • 1...Kxf4
        • 2.Re6#
      • 1...Rxf4
        • 2.Qd5#
      • 1...Sxf4
        • 2.d4#
      • 1...Rf6
        • 2.Rd5#
      • 1...g6
        • 2.Sxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • R(i);SBLOCK::S(E)
    • S(c);SBLOCK::P(D)
    • S(c);SBLOCK::S(E)
  • Tries
    • Try
      • Q(A);
      • Threat
        • P(D)
      • Vars
        • S(c);SBLOCK::S(E)
      • Refutation
        • R(i);
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • S(c);SBLOCK::P(D)
      • Refutation
        • S(d);
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(g);S_FLIGHT,XS(C)::B(H)+R(G)
      • R(i);SBLOCK,XS(C)::QAR1(A)
      • S(d);SBLOCK,XS(C)::P(D)
      • R(i);SBLOCK::B(H)+R(G),DCHECK
      • P(h);::S(C),XP(h)
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