MESON Chess Problem Database

Problem Display
PID: 192901 (4K3/1p3N2/1Pn1kP1p/3pP3/p5P1/P7/4Q3/8 w - - 0 1)

Borovik, Boris V

Schweizerische Schachzeitung, 1984

4K3/1p3N2/1Pn1kP1p/3pP3/p5P1/P7/4Q3/8

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sb4
      • 2.Sd8#
    • 1...Sd4
      • 2.Sd8#
    • 1...Sa5
      • 2.Sd8#
    • 1...Sxe5
      • 2.Qxe5#
    • 1...Sa7
      • 2.Sd8#
    • 1...Se7
      • 2.Sd8#
    • 1...Sb8
      • 2.Sd8#
    • 1...Sd8
      • 2.Sxd8#
    • 1...d4
      • 2.Qc4#
      • 2.Qa2#
    • 1...h5
      • 2.Sg5#
  • Tries
    • 1.Qe1?
      • 1...Sxe5
        • 2.Qxe5#
      • 1...Sd4
        • 2.Sd8#
      • 1...Sb4
        • 2.Sd8#
      • 1...Sa5
        • 2.Sd8#
      • 1...Sa7
        • 2.Sd8#
      • 1...Se7
        • 2.Sd8#
      • 1...Sb8
        • 2.Sd8#
      • 1...Sd8
        • 2.Sxd8#
      • 1...h5
        • 2.Sg5#
      • 1...d4!
    • 1.Qb2?
      • 1...Sxe5
        • 2.Qxe5#
      • 1...d4
        • 2.Qa2#
      • 1...Sb4
        • 2.Sd8#
      • 1...Sa5
        • 2.Sd8#
      • 1...Sa7
        • 2.Sd8#
      • 1...Se7
        • 2.Sd8#
      • 1...Sb8
        • 2.Sd8#
      • 1...Sd8
        • 2.Sxd8#
      • 1...h5
        • 2.Sg5#
      • 1...Sd4!
    • 1.Qc2?
      • threat
        • 2.Qf5#
      • 1...d4
        • 2.Qa2#
        • 2.Qc4#
      • 1...Sd4
        • 2.Qc8#
      • 1...Se7!
    • 1.Qe3?
      • 1...Sxe5
        • 2.Qxe5#
      • 1...Sd4
        • 2.Sd8#
      • 1...Sb4
        • 2.Sd8#
      • 1...Sa5
        • 2.Sd8#
      • 1...Sa7
        • 2.Sd8#
      • 1...Se7
        • 2.Sd8#
      • 1...Sb8
        • 2.Sd8#
      • 1...Sd8
        • 2.Sxd8#
      • 1...h5
        • 2.Sg5#
      • 1...d4!
  • Keys
    • 1.Qh2!
      • 1...Sxe5
        • 2.Qxe5#
      • 1...d4
        • 2.Qa2#
      • 1...Sd4
        • 2.Sd8#
      • 1...Sb4
        • 2.Sd8#
      • 1...Sa5
        • 2.Sd8#
      • 1...Sa7
        • 2.Sd8#
      • 1...Se7
        • 2.Sd8#
      • 1...Sb8
        • 2.Sd8#
      • 1...Sd8
        • 2.Sxd8#
      • 1...h5
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD::S(G)
    • S(c);OGATE,P_SPINS(c),XP(D)::QAR1(A),XS(c)
    • S(c);N_GUARD::S(G),XS(c)
    • P(e);N_GUARD::S(G)
  • Tries
    • Try
      • Q(A);
      • Vars
        • S(c);OGATE,P_SPINS(c),XP(D)::QAR1(A),XS(c)
        • S(c);N_GUARD::S(G)
        • S(c);N_GUARD::S(G),XS(c)
        • P(e);N_GUARD::S(G)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Vars
        • S(c);OGATE,XP(D)::QAR1(A),XS(c)
        • P(b);OGATEB::QAB(A)
        • S(c);N_GUARD::S(G)
        • S(c);N_GUARD::S(G),XS(c)
        • P(e);N_GUARD::S(G)
      • Refutation
        • S(c);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • S(c);OGATE::QAB(A)
      • Refutation
        • S(c);
    • Try
      • Q(A);
      • Vars
        • S(c);OGATE,P_SPINS(c),XP(D)::QAR1(A),XS(c)
        • S(c);N_GUARD::S(G)
        • S(c);N_GUARD::S(G),XS(c)
        • P(e);N_GUARD::S(G)
      • Refutation
        • P(b);
  • Actual
    • Q(A);
    • Vars
      • S(c);OGATE,XP(D)::QAR1(A),XS(c)
      • P(b);OGATEB::QAB(A)
      • S(c);N_GUARD::S(G)
      • S(c);N_GUARD::S(G),XS(c)
      • P(e);N_GUARD::S(G)
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