MESON Chess Problem Database

Problem Display
PID: 157173 (1KN5/B2p2r1/5N2/1n2kBP1/1p3pP1/2n1PP2/1Q6/5b2 w - - 0 1)

Agostini, Valerio

Schach, 1981

1KN5/B2p2r1/5N2/1n2kBP1/1p3pP1/2n1PP2/1Q6/5b2

#2

10 + 8

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Sa3
      • 2.Bd4#
    • 1...Sd4
      • 2.Bxd4#
      • 2.exd4#
    • 1...Sd6
      • 2.Bd4#
    • 1...Sc7
      • 2.Bd4#
    • 1...fxe3
      • 2.Qh2#
  • Tries
    • 1.Qxc3+?
      • 1...Sxc3
        • 2.Bd4#
      • 1...Sd4
        • 2.Bxd4#
        • 2.Qxd4#
        • 2.exd4#
      • 1...bxc3!
    • 1.Qxb4?
      • threat
        • 2.Qxf4#
        • 2.exf4#
      • 1...Rxg5
        • 2.Qe7#
      • 1...fxe3
        • 2.f4#
      • 1...Se2
        • 2.Qe4#
      • 1...Se4
        • 2.Qxe4#
      • 1...Sd5
        • 2.Qe4#
      • 1...Sd4
        • 2.Bxd4#
        • 2.Qd6#
        • 2.Qxd4#
        • 2.exd4#
      • 1...Bc4!
  • Keys
    • 1.Qd2!
      • threat
        • 2.exf4#
      • 1...Rxg5
        • 2.Sxd7#
      • 1...fxe3
        • 2.Qh2#
      • 1...Se2
        • 2.Qd5#
      • 1...Sd5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • S(e);N_GUARD::B(H)
    • P(d);OGATEB,XP(B)::QAB(A)
  • Tries
    • Try
      • Q(A);CHECK,XS(b)
      • Vars
        • S(e);N_GUARD,XQ(A)::B(H)
      • Refutation
        • P(c);XQ(A)
    • Try
      • Q(A);N_PINS(b),XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • R(h);N_GUARD,XP(F)::QAR2(A)
        • P(d);OGATE,XP(B)::P(C)
        • S(b);N_GUARD::QAR1(A)
        • S(b);N_GUARD::QAR1(A),XS(b)
      • Refutation
        • B(a);
  • Actual
    • Q(A);N_PINS(b)
    • Threat
      • P(B),XP(d)
    • Vars
      • R(h);N_GUARD,XP(F)::S(G),XP(g)
      • P(d);OGATEB,XP(B)::QAB(A)
      • S(b);N_GUARD::QAR1(A)
      • S(b);N_GUARD::QAR1(A),XS(b)
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