MESON Chess Problem Database

Problem Display
PID: 106057 (8/1p6/Q1b3p1/2pR4/1bP1k3/4P3/3nPK2/2n1N3 w - - 0 1)

Daishkovsky, Aleksandr

Tekhnika Molodezhi, 1989

8/1p6/Q1b3p1/2pR4/1bP1k3/4P3/3nPK2/2n1N3

#2

7 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ba4
      • 2.Qe6#
      • 2.Qxg6#
    • 1...Bb5
      • 2.Qe6#
      • 2.Qxg6#
    • 1...Be8
      • 2.Qe6#
    • 1...Sd3+
      • 2.exd3#
    • 1...Sf3
      • 2.exf3#
    • 1...Sxc4
      • 2.Qxc4#
  • Tries
    • 1.Sd3?
      • threat
        • 2.Re5#
      • 1...Sxd3+
        • 2.exd3#
      • 1...Bxd5
        • 2.Qxg6#
      • 1...Sxc4
        • 2.Qxc4#
      • 1...Bc3
        • 2.Sxc5#
      • 1...Sf3
        • 2.exf3#
      • 1...Sxe2!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Sg5#
        • 2.Re5#
      • 1...Sd3+
        • 2.exd3#
      • 1...Bxd5
        • 2.Qxg6#
      • 1...Sxe2
        • 2.Sg5#
      • 1...Sxf3
        • 2.exf3#
      • 1...Sxc4
        • 2.Qxc4#
      • 1...Bc3
        • 2.Sg5#
      • 1...g5
        • 2.Sxg5#
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(f);OGATE::QAR2(G)
    • S(a);CHECK,OGATE::P(B),XS(a)
    • S(b);OGATE::P(B),XS(b)
    • S(b);OGATE,XP(E)::QAR2(G),XS(b)
  • Tries
    • Try
      • S(A);
      • Threat
        • R1(F)
      • Vars
        • S(a);CHECK,OGATE,XS(A)::P(B),XS(a)
        • B(f);OGATE,XR(F)::QAB(G),XP(g)
        • S(b);OGATE,XP(E)::QAR2(G),XS(b)
        • B(c);N_GUARD::S(A),XP(e)
        • S(b);OGATE::P(B),XS(b)
      • Refutation
        • S(a);XP(B)
  • Actual
    • S(A);
    • Threat
      • DUALS(2)
    • Vars
      • S(a);CHECK,OGATE::P(B),XS(a)
      • B(f);OGATE,XR(F)::QAB(G),XP(g)
      • S(a);XP(B)::S(A)
      • S(b);OGATE,XS(A)::P(B),XS(b)
      • S(b);OGATE,XP(E)::QAR2(G),XS(b)
      • B(c);::S(A)
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