MESON Chess Problem Database

Problem Display
PID: 141106 (8/2B5/8/1N3pp1/3P1P2/r1ppk2P/2B4R/2N3KQ w - - 0 1)

Vahlakov, Yuri Nikoleyevich

3rd Prize, Shakhmaty, 1973

8/2B5/8/1N3pp1/3P1P2/r1ppk2P/2B4R/2N3KQ

#2

10 + 6

102 Probleemblad 1976
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...dxc2
      • 2.Re2#
    • 1...d2
      • 2.Re2#
  • Tries
    • 1.Sd6?
      • threat
        • 2.Sxf5#
      • 1...Kxd4
        • 2.Bb6#
      • 1...Kxf4
        • 2.Sc4#
      • 1...Ra5!
  • Keys
    • 1.Kg2!
      • threat
        • 2.Qe1#
      • 1...Kd2
        • 2.Kf3#
      • 1...Ke4
        • 2.Kf2#
      • 1...d2
        • 2.Qg1#

Anticipated by 189918(1912)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(c);N_GUARD,XB(D)::R1(E)
    • P(c);N_GUARD::R1(E)
  • Tries
    • Try
      • S(I);
      • Threat
        • S(I),XP(e)
      • Vars
        • K(d);OGATEB,S_FLIGHT,XP(G)::B(J)
        • K(d);S_FLIGHT,XP(H)::B(J)+S(I)
      • Refutation
        • R(a);
  • Actual
    • K(B);P-FLIGHT
    • Threat
      • QAR2(C)
    • Vars
      • K(d);S_FLIGHT::R(E)+K(B)
      • K(d);P-FLIGHT,P_SPINP(c)::QAB(C)+K(B)
      • P(c);SBLOCK::QAB(C)
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