MESON Chess Problem Database

Problem Display
PID: 28442 (4b3/3B4/K4Rp1/3k1p2/5n1Q/NN1p3n/3B4/4R3 w - - 0 1)

Dombrovskis, Alfreds A

Lukyanov, Valentin Volodimirovich

Shedey, Sergey Oleksandrovich

1st Prize, 64 Shakhmatnoe obozrenie, 1976

4b3/3B4/K4Rp1/3k1p2/5n1Q/NN1p3n/3B4/4R3

#2

8 + 7

3771 FIDE Album (1974-1976) 1980
721 Variantim 2007
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bf7
      • 2.Bc6#
    • 1...Sg2
      • 2.Qc4#
      • 2.Qd4#
    • 1...Sh5
      • 2.Qc4#
      • 2.Qd4#
  • Tries
    • 1.Bc3?
      • threat
        • 2.Re5#
      • 1...Se2
        • 2.Qc4#
      • 1...Se6!
    • 1.Bb4?
      • threat
        • 2.Rd6#
      • 1...Se6
        • 2.Qc4#
      • 1...Se2!
    • 1.Rfe6?
      • threat
        • 2.R1e5#
      • 1...Se2
        • 2.Qc4#
      • 1...Sxe6!
    • 1.Qxf4?
      • threat
        • 2.Re5#
        • 2.Rd6#
        • 2.Qe5#
        • 2.Qd6#
        • 2.Qf3#
        • 2.Qc4#
        • 2.Qd4#
      • 1...Sg1
        • 2.Re5#
        • 2.Rd6#
        • 2.Qe5#
        • 2.Qd6#
        • 2.Qc4#
        • 2.Qd4#
      • 1...Sf2
        • 2.Re5#
        • 2.Rd6#
        • 2.Qe5#
        • 2.Qd6#
        • 2.Qc4#
        • 2.Qd4#
      • 1...Sg5
        • 2.Re5#
        • 2.Rd6#
        • 2.Qe5#
        • 2.Qd6#
        • 2.Qc4#
        • 2.Qd4#
      • 1...Sxf4!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Sb6#
      • 1...Kxc4
        • 2.Be6#
      • 1...Se2
        • 2.Rd6#
      • 1...Se6
        • 2.Re5#

This anticipates 55038(1990-1991)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(g);N_GUARD::B(H)
  • Tries
    • Try
      • B(B);
      • Threat
        • R1(A)
      • Vars
        • S(c);OGATE::QAB1(E)
      • Refutation
        • S(c);
    • Try
      • B(B);
      • Threat
        • R1(G)
      • Vars
        • S(c);OGATE::QAB1(E)
      • Refutation
        • S(c);
    • Try
      • R(G);
      • Threat
        • R1(A)
      • Vars
        • S(c);OGATE::QAB1(E)
      • Refutation
        • S(c);XR(G)
    • Try
      • Q(E);XS(c)
      • Threat
        • DUALS(7)
      • Refutation
        • S(b);XQ(E)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(d);P_SPINS(c),S_FLIGHT,XS(C)::B(H)
      • S(c);::R1(G)
      • S(c);::R1(A)
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