MESON Chess Problem Database

Problem Display
PID: 110283 (8/8/8/7Q/5PP1/1K1Pp3/2R1Rn1P/3k4 w - - 0 1)

Lider, Valentin Viktorovich

Hlas l'udu, 1989

8/8/8/7Q/5PP1/1K1Pp3/2R1Rn1P/3k4

#2

8 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qh4?
      • 1...Sxg4
        • 2.Re1#
        • 2.Qe1#
      • 1...Sh1
        • 2.Re1#
        • 2.Qe1#
      • 1...Sh3
        • 2.Re1#
        • 2.Qe1#
      • 1...Se4
        • 2.Re1#
        • 2.Qe1#
      • 1...Sxd3!
    • 1.Qd5?
      • 1...Sxd3
        • 2.Qxd3#
      • 1...Sxg4
        • 2.Qh1#
      • 1...Sh1
        • 2.Qxh1#
      • 1...Se4
        • 2.dxe4#
      • 1...Sh3!
    • 1.g5?
      • 1...Sxd3
        • 2.Rxe3#
      • 1...Sh1
        • 2.Rxe3#
      • 1...Sh3
        • 2.Rxe3#
      • 1...Se4
        • 2.Rxe3#
      • 1...Sg4!
  • Keys
    • 1.Rxe3!
      • 1...Sxd3
        • 2.g5#
      • 1...Sxg4
        • 2.Qxg4#
      • 1...Sh1
        • 2.g5#
      • 1...Sh3
        • 2.g5#
      • 1...Se4
        • 2.g5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(H);
      • Refutation
        • S(b);XP(E)
    • Try
      • Q(H);
      • Vars
        • S(b);OGATE,P_SPINS(b),XP(E)::QAR2(H),XS(b)
        • S(b);N_GUARD,XP(G)::QAR(H)
        • S(b);N_GUARD::QAR(H),XS(b)
        • S(b);OGATE::QAR(H)+P(E),XS(b)
      • Refutation
        • S(b);
    • Try
      • P(G);
      • Vars
        • S(b);N_GUARD,XP(E)::QAB(H)+R(B),XP(c)
        • S(b);N_GUARD::QAB(H)+R(B),XP(c)
      • Refutation
        • S(b);
  • Actual
    • R(B);XP(c)
    • Vars
      • S(b);N_GUARD,XP(E)::QAB(H)+P(G)
      • S(b);OGATE,P_SPINS(b),XP(G)::QAB(H),XS(b)
      • S(b);N_GUARD::QAB(H)+P(G)
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