MESON Chess Problem Database

Problem Display
PID: 244392 (1N4bQ/p3KpB1/3p3b/NppkP1p1/6R1/2Pp4/8/1B6 w - - 0 1)

Dittrich, Stefan

Schach, 1977

1N4bQ/p3KpB1/3p3b/NppkP1p1/6R1/2Pp4/8/1B6

#2

9 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...d2
      • 2.Be4#
    • 1...b4
      • 2.c4#
    • 1...f5
      • 2.Qxg8#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Se3#
      • 1...Bxg7
        • 2.Qh1#
      • 1...f6
        • 2.Qxg8#
      • 1...bxc4!
    • 1.Qxh6?
      • threat
        • 2.Qh1#
        • 2.Qxd6#
      • 1...dxe5
        • 2.Qc6#
        • 2.Qd6#
      • 1...c4
        • 2.Qxd6#
      • 1...Bh7
        • 2.Qxd6#
      • 1...f6!
  • Keys
    • 1.Sd7!
      • 1...Bxg7
        • 2.Qh1#
      • 1...dxe5
        • 2.Sf6#
      • 1...Bh7
        • 2.Qa8#
      • 1...d2
        • 2.Be4#
      • 1...b4
        • 2.c4#
      • 1...c4
        • 2.Rd4#
      • 1...a6
        • 2.Sb6#
      • 1...f5
        • 2.Qxg8#
      • 1...f6
        • 2.Qxg8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATE::B(A)
    • P(b);N_GUARD::P(B)
    • P(i);OGATEB::QAB(I),XB(j)
  • Tries
    • Try
      • S(D);
      • Threat
        • S(D)
      • Vars
        • B(g);OGATE,XB(G)::QAB(I)
        • P(i);OGATEB::QAB(I),XB(j)
      • Refutation
        • P(b);XS(D)
    • Try
      • Q(I);XB(g)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAR1(I),XP(f)
        • B(j);::QAR1(I),XP(f)
      • Refutation
        • P(i);
  • Actual
    • S(H);
    • Vars
      • B(g);OGATE,XB(G)::QAB(I)
      • P(f);SBLOCK,XP(E)::S(H)
      • B(j);OGATE::QAB(I)
      • P(a);OGATE::B(A)
      • P(b);N_GUARD::P(B)
      • P(c);N_GUARD::R1(C)
      • P(h);N_GUARD::S(H)
      • P(i);OGATEB::QAB(I),XB(j)
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