MESON Chess Problem Database

Problem Display
PID: 209723 (8/4Q1pK/1b6/r4p2/r2N1k2/3P4/1B1p2R1/3B4 w - - 0 1)

Viksna, Kristaps

Suomen Shakki, 1991

8/4Q1pK/1b6/r4p2/r2N1k2/3P4/1B1p2R1/3B4

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Qg5#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Qh4#
        • 2.Qg5#
      • 1...Rd4
        • 2.Qe3#
      • 1...Bf2
        • 2.Qg5#
      • 1...Bd8
        • 2.Qe3#
      • 1...g5
        • 2.Qxg5#
      • 1...Bd4!
    • 1.Sf3?
      • threat
        • 2.Qg5#
      • 1...g5
        • 2.Qxg5#
      • 1...Bd8!
    • 1.Sc6?
      • threat
        • 2.Qg5#
      • 1...g5
        • 2.Qxg5#
      • 1...Bd8!
    • 1.Qh4+?
      • 1...Ke3
        • 2.Qg3#
      • 1...Ke5!
    • 1.Qd6+?
      • 1...Ke3
        • 2.Sc2#
        • 2.Qg3#
      • 1...Re5!
    • 1.Qxg7?
      • threat
        • 2.Qg3#
      • 1...Ke3
        • 2.Qg3#
      • 1...Ra7!
  • Keys
    • 1.Sxf5!
      • threat
        • 2.Qg5#
      • 1...Kxf5
        • 2.Qf7#
      • 1...Rxf5
        • 2.Rg4#
      • 1...Bd4
        • 2.Qe4#
      • 1...Rd4
        • 2.Rf2#
      • 1...Bd8
        • 2.Rf2#
      • 1...g5
        • 2.Qxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • R(d);SBLOCK::QAB1(F)
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);S_CUTB(f)::QAB1(F)
        • B(f);::QAB1(F)
        • B(f);N_GUARD::QAB1(F)
        • P(g);::QAB1(F),XP(g)
      • Refutation
        • B(f);
    • Try
      • S(E);
      • Threat
        • QAB1(F)
      • Vars
        • P(g);::QAB1(F),XP(g)
      • Refutation
        • B(f);
    • Try
      • S(E);
      • Threat
        • QAB1(F)
      • Vars
        • P(g);::QAB1(F),XP(g)
      • Refutation
        • B(f);
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR2(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Refutation
        • R(d);P_SPINR(d)
    • Try
      • Q(F);XP(g)
      • Threat
        • QAB1(F)
      • Vars
        • K(c);S_FLIGHT::QAR2(F)
      • Refutation
        • R(d);P_PINQ(F)
  • Actual
    • S(E);XP(e)
    • Threat
      • QAB1(F)
    • Vars
      • K(c);OGATEB,P-FLIGHT,XS(E)::QAR2(F)
      • R(d);SBLOCK,XS(E)::R1(C)
      • B(f);S_CUTR(b)::QAR1(F)
      • R(b);S_CUTB(f)::R(C)
      • B(f);N_GUARD::R(C)
      • P(g);::QAB1(F),XP(g)
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