MESON Chess Problem Database

Problem Display
PID: 52903 (4r3/N4n2/1p5b/2kn1N2/B2R4/8/4p2Q/6BK w - - 0 1)

Leites, Samuil Davidovich

Revista de Sah, 1951

4r3/N4n2/1p5b/2kn1N2/B2R4/8/4p2Q/6BK

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Qc7#
    • 1...Se3
      • 2.Qc7#
    • 1...Sf6
      • 2.Qc7#
    • 1...Sc7
      • 2.Qxc7#
    • 1...Sg5
      • 2.Qd6#
    • 1...Sd6
      • 2.Qxd6#
    • 1...Sd8
      • 2.Qd6#
    • 1...Sh8
      • 2.Qd6#
  • Tries
    • 1.Qxe2?
      • threat
        • 2.Rc4#
        • 2.Qc4#
        • 2.Qb5#
      • 1...b5
        • 2.Rc4#
        • 2.Qxb5#
      • 1...Sc3
        • 2.Qc4#
      • 1...Se3
        • 2.Qb5#
      • 1...Sb4
        • 2.Qc4#
        • 2.Qb5#
      • 1...Sf4
        • 2.Qc4#
        • 2.Qb5#
        • 2.Qc2#
      • 1...Sf6
        • 2.Qc4#
        • 2.Qb5#
        • 2.Qc2#
      • 1...Sc7
        • 2.Qc4#
        • 2.Qc2#
      • 1...Se7
        • 2.Qc4#
        • 2.Qb5#
        • 2.Qc2#
      • 1...Se5
        • 2.Rc4#
        • 2.Qb5#
      • 1...Sd6
        • 2.Rc4#
      • 1...Rxe2!
  • Keys
    • 1.Bb3!
      • threat
        • 2.Rc4#
      • 1...Sc3
        • 2.Qc7#
      • 1...Se3
        • 2.Qc7#
      • 1...Sb4
        • 2.Rd5#
      • 1...Sf4
        • 2.Re4#
      • 1...Sf6
        • 2.Qc7#
      • 1...Sc7
        • 2.Qxc7#
      • 1...Se7
        • 2.Rf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • S(c);N_GUARD::QAR2(C)
    • S(c);N_GUARD::QAR2(C),XS(c)
    • S(f);N_GUARD::QAB1(C)
    • S(f);N_GUARD::QAB1(C),XS(f)
  • Tries
    • Try
      • Q(C);XP(a)
      • Threat
        • DUALS(3)
      • Vars
        • S(c);::QAR1(C)
        • S(f);::B(A)+R(E),DCHECK
      • Refutation
        • R(g);XQ(C)
  • Actual
    • B(D);
    • Threat
      • B(A)+R(E),DCHECK
    • Vars
      • S(c);N_GUARD::QAR2(C)
      • S(c);SBLOCK::B(A)+R(E),DCHECK
      • S(c);N_GUARD,S_CUTB(e)::B(A)+R(E)
      • S(c);N_GUARD::QAR2(C),XS(c)
      • S(c);N_GUARD,S_CUTR(g)::B(A)+R(E)
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