MESON Chess Problem Database

Problem Display
PID: 5140 (1NB5/2p1Q3/q6p/2Pk4/R7/6P1/2P1n2K/8 w - - 0 1)

Havel, Miroslav

Sachove listy, 1900

1NB5/2p1Q3/q6p/2Pk4/R7/6P1/2P1n2K/8

#2

8 + 5

6024 Bohemian Garnets 1923
3360 Simple Two-move Themes 1924
4312 Ceske Granaty 1975
5454 Near Snap 2014

SOLUTION

  • SOUND
  • Sets
    • 1...h5
      • 2.Qg5#
    • 1...c6
      • 2.Qd6#
  • Tries
    • 1.Sxa6?
      • threat
        • 2.Qe4#
        • 2.Qe6#
      • 1...Kc6
        • 2.Qd7#
      • 1...Sxg3
        • 2.Qe6#
      • 1...Sc3
        • 2.Qe6#
      • 1...Sf4
        • 2.Qe4#
      • 1...Sd4!
    • 1.Be6+?
      • 1...Ke5
        • 2.Sd7#
      • 1...Qxe6!
    • 1.Bb7+?
      • 1...Qc6
        • 2.Bxc6#
      • 1...c6
        • 2.Qd6#
      • 1...Qxb7!
  • Keys
    • 1.Qe3!
      • 1...Qxc8
        • 2.c4#
      • 1...Qxa4
        • 2.Be6#
      • 1...Sxg3
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Qd3
        • 2.Be6#
      • 1...Qc4
        • 2.Be6#
      • 1...Qb5
        • 2.Be6#
      • 1...Qb7
        • 2.Be6#
        • 2.c4#
      • 1...Qa5
        • 2.Be6#
        • 2.c4#
      • 1...Qb6
        • 2.c4#
      • 1...Qc6
        • 2.c4#
      • 1...Qd6
        • 2.c4#
      • 1...Qe6
        • 2.Bxe6#
        • 2.c4#
      • 1...Qf6
        • 2.c4#
      • 1...Qg6
        • 2.c4#
      • 1...Qa7
        • 2.Be6#
        • 2.c4#
      • 1...Qa8
        • 2.Be6#
        • 2.c4#
      • 1...Sc1
        • 2.Qd4#
      • 1...Sg1
        • 2.Qd4#
      • 1...Sc3
        • 2.Qd4#
      • 1...Sf4
        • 2.Qd4#
      • 1...h5
        • 2.Qg5#
      • 1...c6
        • 2.Be6#

This anticipates 93878(1911)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 16
    • REMOVED MATES = 0
  • Sets
    • P(d);N_GUARD::QAR(F)
    • P(e);N_GUARD,S_CUTQ(c)::QAR1(F)
  • Tries
    • Try
      • S(G);XQ(c)
      • Threat
        • DUALS(2)
      • Vars
        • K(b);S_FLIGHT::QAB1(F)
        • S(a);XP(C)::QAB1(F)
        • S(a);::QAB1(F)
      • Refutation
        • S(a);
    • Try
      • B(H);CHECK
      • Vars
        • K(b);P-FLIGHT::S(G)
      • Refutation
        • Q(c);XB(H)
    • Try
      • B(H);CHECK
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c)::B(H),XQ(c)
        • P(e);P_SPINP(e)::QAR1(F)
      • Refutation
        • Q(c);XB(H)
  • Actual
    • Q(F);
    • Vars
      • Q(c);N_GUARD,XB(H)::P(A)
      • Q(c);N_GUARD,XR(D)::B(H)
      • S(a);N_GUARD,XP(C)::QAR1(F)
      • S(a);N_GUARD::QAR1(F),XS(a)
      • Q(c);N_GUARD::B(H)
      • Q(c);N_GUARD::P(A)
      • Q(c);N_GUARD,P_PINP(C)::P(A)
      • S(a);N_GUARD::QAR1(F)
      • P(d);N_GUARD::QAR(F)
      • P(e);S_CUTQ(c)::B(H)
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