MESON Chess Problem Database

Problem Display
PID: 177991 (6B1/4N3/4p3/rP6/p3k1b1/1p6/RQ6/K1B1N3 w - - 0 1)

Kisis, Imants J

5th HM., Sahs (Latvia), 1986

6B1/4N3/4p3/rP6/p3k1b1/1p6/RQ6/K1B1N3

#2

8 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Bh7#
    • 1...Be2
      • 2.Bh7#
    • 1...Bf3
      • 2.Bh7#
    • 1...e5
      • 2.Bd5#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Qe5#
      • 1...Kd5
        • 2.Qd4#
      • 1...Kf5
        • 2.Bh7#
      • 1...e5
        • 2.Qxe5#
        • 2.Qb1#
      • 1...Rxb5!
    • 1.Be3?
      • threat
        • 2.Qd4#
      • 1...Kxe3
        • 2.Qe5#
      • 1...e5!
    • 1.Qd2?
      • threat
        • 2.Qe3#
        • 2.Qf4#
      • 1...Ke5
        • 2.Qf4#
      • 1...e5
        • 2.Bd5#
        • 2.Qe3#
        • 2.Qb4#
        • 2.Qd3#
        • 2.Qd5#
      • 1...b2+!
    • 1.Qf2?
      • threat
        • 2.Qe3#
        • 2.Qf4#
      • 1...Ke5
        • 2.Qf4#
      • 1...Bf3
        • 2.Qe3#
      • 1...e5
        • 2.Bd5#
        • 2.Qe3#
      • 1...b2+!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Qe2#
      • 1...Kd3
        • 2.Qd4#
      • 1...Kxf3
        • 2.Qg2#
      • 1...Bxf3
        • 2.Bh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(d);N_GUARD::B(H)
    • P(f);OGATE::B(H)
  • Tries
    • Try
      • S(G);
      • Threat
        • QAR1(E)
      • Vars
        • K(c);P_SPINP(f),S_FLIGHT::QAR1(E)
        • K(c);S_FLIGHT::B(H)
      • Refutation
        • R(e);XP(F)
    • Try
      • B(B);
      • Threat
        • QAR1(E)
      • Vars
        • K(c);P-FLIGHT,XB(B)::QAR2(E)
      • Refutation
        • P(f);
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);P-FLIGHT::QAB1(E)
      • Refutation
        • P(a);CHECK
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);P-FLIGHT::QAB1(E)
        • B(d);::QAR1(E)
      • Refutation
        • P(a);CHECK
  • Actual
    • S(C);
    • Threat
      • QAR2(E)
    • Vars
      • K(c);S_FLIGHT::QAR1(E)
      • K(c);OGATEB,S_FLIGHT,XS(C)::QAB1(E)
      • B(d);N_GUARD,SBLOCK,XS(C)::B(H)
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