MESON Chess Problem Database

Problem Display
PID: 47460 (7K/1n3PQ1/7p/4NN2/2P1k3/3pPp1B/2pppb2/4qR1b w - - 0 1)

Krikheli, Iosif Mikhailovich

2nd Place, Match: USSR - Yugoslavia, 1977-1978

7K/1n3PQ1/7p/4NN2/2P1k3/3pPp1B/2pppb2/4qR1b

#2

9 + 11

56 The Problemist 2003
145 StrateGems 2007
56 The Problemist 2015

SOLUTION

  • SOUND
  • Tries
    • 1.Sxd3?
      • threat
        • 2.Qd4#
      • 1...Kxd3
        • 2.Qd4#
      • 1...Qa1
        • 2.Sxf2#
      • 1...Bxe3!
    • 1.Sg4?
      • threat
        • 2.Qe5#
      • 1...Kxf5
        • 2.Sxf2#
      • 1...Qa1
        • 2.Sxf2#
      • 1...Bg3!
    • 1.Sc6?
      • threat
        • 2.Qd4#
        • 2.Qe5#
        • 2.Qg4#
      • 1...Bxe3
        • 2.Qe5#
      • 1...Bg3
        • 2.Qd4#
      • 1...h5
        • 2.Qd4#
        • 2.Qe5#
      • 1...Qa1!
    • 1.Sg6?
      • threat
        • 2.Qd4#
        • 2.Qe5#
      • 1...Bxe3
        • 2.Qe5#
      • 1...Bg3
        • 2.Qd4#
      • 1...Qa1!
    • 1.Sd7?
      • threat
        • 2.Qd4#
        • 2.Qe5#
        • 2.Qg4#
      • 1...Bxe3
        • 2.Qe5#
      • 1...Bg3
        • 2.Qd4#
      • 1...h5
        • 2.Qd4#
        • 2.Qe5#
      • 1...Qa1!
  • Keys
    • 1.Sxf3!
      • threat
        • 2.Qg4#
      • 1...Kxf3
        • 2.Qg4#
      • 1...Bxf3
        • 2.Qd4#
      • 1...Bxe3
        • 2.Qe5#
      • 1...Qa1
        • 2.Sxd2#
      • 1...Bg3
        • 2.Qd4#
      • 1...h5
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);XP(g)
      • Threat
        • QAR1(H)
      • Vars
        • K(i);S_FLIGHT,XS(E)::QAR1(H)
        • Q(a);N_GUARD,P_PINQ(H)::S(E),XB(f)
      • Refutation
        • B(f);XP(B)
    • Try
      • S(E);
      • Threat
        • QAR1(H)
      • Vars
        • K(i);S_FLIGHT,XS(F)::B(C)+S(E),XB(f)
        • Q(a);N_GUARD,P_PINQ(H)::S(E),XB(f)
      • Refutation
        • B(f);
    • Try
      • S(E);
      • Threat
        • DUALS(3)
      • Vars
        • B(f);XP(B)::QAR1(H)
        • B(f);::QAR1(H)
      • Refutation
        • Q(a);P_PINQ(H)
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • B(f);XP(B)::QAR1(H)
        • B(f);::QAR1(H)
      • Refutation
        • Q(a);P_PINQ(H)
    • Try
      • S(E);
      • Threat
        • DUALS(3)
      • Vars
        • B(f);XP(B)::QAR1(H)
        • B(f);::QAR1(H)
      • Refutation
        • Q(a);P_PINQ(H)
  • Actual
    • S(E);XP(h)
    • Threat
      • QAR2(H)
    • Vars
      • K(i);P_SPINB(f),S_FLIGHT,XS(E)::QAB1(H)
      • B(b);SBLOCK,XS(E)::QAR1(H)
      • B(f);XP(B)::QAR1(H)
      • Q(a);N_GUARD,P_PINQ(H)::S(E),XP(d)
      • B(f);::QAR1(H)
      • P(j);N_GUARD::S(E)
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