MESON Chess Problem Database

Problem Display
PID: 242279 (6B1/8/n1p2KN1/r2P4/1r2kp2/1PQ4p/5Pb1/8 w - - 0 1)

Kisis, Imants J

64 Shakhmatnoe obozrenie, 1991

6B1/8/n1p2KN1/r2P4/1r2kp2/1PQ4p/5Pb1/8

#2

7 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bf1
      • 2.f3#
    • 1...f3
      • 2.Qe3#
  • Tries
    • 1.Se7?
      • threat
        • 2.Bh7#
      • 1...f3
        • 2.Qe3#
      • 1...Rxd5!
    • 1.Bh7?
      • threat
        • 2.Se7#
      • 1...Kxd5
        • 2.Qe5#
      • 1...Rxd5
        • 2.Se5#
      • 1...f3!
    • 1.Qc2+?
      • 1...Kf3
        • 2.Se5#
      • 1...Kd4!
  • Keys
    • 1.Se5!
      • threat
        • 2.Qd3#
      • 1...Rxb3
        • 2.Qc4#
      • 1...Rxd5
        • 2.Bh7#
      • 1...f3
        • 2.Qe3#
      • 1...Rd4
        • 2.Qe1#
      • 1...Bf1
        • 2.f3#
      • 1...Sc5
        • 2.Qxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::P(A)
    • P(e);N_GUARD::QAR1(C)
  • Tries
    • Try
      • S(F);
      • Threat
        • B(G)
      • Vars
        • P(e);N_GUARD::QAR1(C)
      • Refutation
        • R(f);XP(D)
    • Try
      • B(G);
      • Threat
        • B(G)+S(F)
      • Vars
        • K(d);S_FLIGHT,XP(D)::QAR1(C)
        • R(f);SBLOCK,XP(D)::B(G)+S(F)
      • Refutation
        • P(e);
    • Try
      • Q(C);CHECK
      • Vars
        • K(d);S_FLIGHT::S(F)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • S(F);
    • Threat
      • QAB1(C)
    • Vars
      • R(c);N_GUARD,XP(B)::QAR2(C)
      • R(f);SBLOCK,XP(D)::B(G)
      • P(e);N_GUARD::QAR1(C)
      • R(c);SBLOCK::QAR(C)
      • B(a);N_GUARD::P(A)
      • S(g);N_GUARD::QAR(C),XR(c)
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