MESON Chess Problem Database

Problem Display
PID: 224 (KQ4nb/4p3/p1p5/5N1N/2P1kPB1/q6R/2P5/3nr3 w - - 0 1)

Loshinski, Lev Ilich

Zagoruyko, Leonid Ivanovich

1st Prize, USSR Sports Committee, 1950

KQ4nb/4p3/p1p5/5N1N/2P1kPB1/q6R/2P5/3nr3

#2

9 + 9

45 Schach 1952
3147 Chess Problems: Introduction to an Art 1963
3105 FIDE Album (1945-1955) 1964
6479 Problemschach (Sidler) 1968
23 Die Schwalbe 1969

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Shg3#
    • 1...Qb2
      • 2.Shg3#
    • 1...Qb4
      • 2.Shg3#
    • 1...Qc5
      • 2.Shg3#
    • 1...Qa1
      • 2.Shg3#
    • 1...Qa2
      • 2.Shg3#
    • 1...Qd3
      • 2.cxd3#
    • 1...Qg3
      • 2.Shxg3#
    • 1...Qa4
      • 2.Shg3#
    • 1...Qa5
      • 2.Shg3#
    • 1...Bc3
      • 2.Shg3#
    • 1...Be5
      • 2.Qxe5#
    • 1...Sc3
      • 2.Shg3#
    • 1...Se3
      • 2.Shg3#
    • 1...Sf6
      • 2.Qe5#
    • 1...c5
      • 2.Qb7#
  • Tries
    • 1.Qc7?
      • threat
        • 2.Qxc6#
      • 1...Qc5
        • 2.Shg3#
      • 1...Qd3
        • 2.cxd3#
      • 1...Qa4
        • 2.Shg3#
      • 1...Qa5
        • 2.Shg3#
      • 1...Sc3
        • 2.Shg3#
      • 1...Se3
        • 2.Shg3#
      • 1...Sf6
        • 2.Qe5#
      • 1...c5
        • 2.Qc6#
        • 2.Qb7#
      • 1...Qd6!
    • 1.Qb6?
      • threat
        • 2.Qxc6#
      • 1...Qd6
        • 2.Sfg3#
      • 1...Qd3
        • 2.cxd3#
      • 1...Qa4
        • 2.Sfg3#
      • 1...Qa5
        • 2.Sfg3#
      • 1...Sc3
        • 2.Sfg3#
      • 1...Se3
        • 2.Sfg3#
      • 1...Sf6
        • 2.Qd4#
      • 1...c5
        • 2.Qc6#
        • 2.Qb7#
      • 1...Qc5!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Qxc6#
      • 1...Qd6
        • 2.Bf3#
      • 1...Qc5
        • 2.Bf3#
      • 1...Qd3
        • 2.cxd3#
      • 1...Qa4
        • 2.Bf3#
      • 1...Qa5
        • 2.Bf3#
      • 1...Sc3
        • 2.Bf3#
      • 1...Se3
        • 2.Bf3#
      • 1...Sf6
        • 2.Qe6#
      • 1...c5
        • 2.Qb7#
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 6
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • Q(c);N_GUARD::S(G)
    • Q(c);OGATE::P(A),XQ(c)
    • Q(c);N_GUARD::S(G),XQ(c)
    • B(i);S_CUTQ(c)::S(G)
    • B(i);N_GUARD::QAR1(I),XB(i)
    • S(a);S_CUTQ(c)::S(G)
    • S(h);S_CUTB(i)::QAR1(I)
    • P(f);OGATEB::QAB(I)
  • Tries
    • Try
      • Q(I);
      • Threat
        • QAB(I),XP(f)
      • Vars
        • Q(c);N_GUARD::S(G)
        • Q(c);OGATE::P(A),XQ(c)
        • S(a);S_CUTQ(c)::S(G)
        • S(h);S_CUTB(i)::QAR1(I)
      • Refutation
        • Q(c);
    • Try
      • Q(I);
      • Threat
        • QAB(I),XP(f)
      • Vars
        • Q(c);N_GUARD::S(F)
        • Q(c);OGATE::P(A),XQ(c)
        • S(a);S_CUTQ(c)::S(F)
        • S(h);S_CUTB(i)::QAR1(I)
      • Refutation
        • Q(c);
  • Actual
    • Q(I);
    • Threat
      • QAB(I),XP(f)
    • Vars
      • Q(c);N_GUARD::B(E)
      • Q(c);OGATE::P(A),XQ(c)
      • S(a);S_CUTQ(c)::B(E)
      • S(h);S_CUTB(i)::QAR2(I)
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