MESON Chess Problem Database

Problem Display
PID: 242249 (1K2R3/p1N4n/1p1k1p2/2pN1p2/5p2/B4p1r/5Q1p/8 w - - 0 1)

Kisis, Imants J

Shakhmaty (Riga), 1978

1K2R3/p1N4n/1p1k1p2/2pN1p2/5p2/B4p1r/5Q1p/8

#2

6 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sb4?
      • threat
        • 2.Qd2#
      • 1...Kd7
        • 2.Qd2#
      • 1...c4
        • 2.Qd4#
      • 1...cxb4!
    • 1.Sxb6?
      • threat
        • 2.Re6#
        • 2.Qxc5#
      • 1...Kc6
        • 2.Re6#
        • 2.Qxc5#
      • 1...Sg5
        • 2.Qxc5#
      • 1...Sf8
        • 2.Qxc5#
      • 1...axb6!
    • 1.Rd8+?
      • 1...Kc6
        • 2.Se7#
      • 1...Ke5!
    • 1.Qd4?
      • threat
        • 2.Se7#
      • 1...Kc6
        • 2.Se7#
      • 1...Kd7!
    • 1.Qxc5+?
      • 1...Kd7
        • 2.Qd6#
        • 2.Qb5#
      • 1...bxc5!
    • 1.Qd2?
      • threat
        • 2.Sb4#
      • 1...Kc6
        • 2.Se7#
      • 1...Kd7
        • 2.Sb4#
        • 2.Se7#
      • 1...f2!
  • Keys
    • 1.Se7!
      • threat
        • 2.Qd4#
      • 1...Ke5
        • 2.Sc8#
      • 1...Kd7
        • 2.Qd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);N_PINP(e)
      • Threat
        • QAR(A)
      • Vars
        • K(h);P-FLIGHT::QAR(A)
        • P(e);N_GUARD::QAR2(A)
      • Refutation
        • P(e);P_SPINP(e),XS(C)
    • Try
      • S(C);XP(g)
      • Threat
        • DUALS(2)
      • Vars
        • S(k);::QAB1(A),XP(e)
      • Refutation
        • P(j);XS(C)
    • Try
      • R(F);CHECK
      • Vars
        • K(h);N_SPINP(e),P-FLIGHT::S(C)
      • Refutation
        • K(h);N_SPINP(e),S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR(A)+S(C)
      • Vars
        • K(h);N_SPINP(e),P-FLIGHT::S(C)
      • Refutation
        • K(h);N_SPINP(e),P-FLIGHT
    • Try
      • Q(A);CHECK,XP(e)
      • Refutation
        • P(g);P_SPINP(g),XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAR(A)+S(C)
      • Vars
        • K(h);N_SPINP(e),P-FLIGHT::S(C)
      • Refutation
        • P(b);
  • Actual
    • S(C);
    • Threat
      • QAR2(A)
    • Vars
      • K(h);N_SPINP(e),S_FLIGHT::R(F)+S(C)
      • K(h);N_SPINP(e),P-FLIGHT::QAR(A)
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