MESON Chess Problem Database

Problem Display
PID: 9425 (1b2Q3/1N6/4PP1R/4k3/q3P3/BNp1RbK1/3P4/8 w - - 0 1)

Hostan, Jan

2nd Prize, Armeeblatt, 1903

1b2Q3/1N6/4PP1R/4k3/q3P3/BNp1RbK1/3P4/8

#2

11 + 5

3360 Simple Two-move Themes 1924

SOLUTION

  • SOUND
  • Sets
    • 1...Qb5
      • 2.d4#
    • 1...Qc6
      • 2.d4#
    • 1...Qd7
      • 2.exd7#
    • 1...Qxa3
      • 2.d4#
    • 1...Qa5
      • 2.d4#
    • 1...Qa6
      • 2.d4#
    • 1...Qa8
      • 2.d4#
    • 1...Bd6
      • 2.Bxd6#
    • 1...Ba7
      • 2.Bd6#
  • Tries
    • 1.f7?
      • threat
        • 2.Qxb8#
        • 2.Qh8#
      • 1...Qxb3
        • 2.Qh8#
      • 1...Qxe8
        • 2.d4#
      • 1...Qxa3
        • 2.Qh8#
        • 2.d4#
      • 1...Qxe4
        • 2.Qb5#
      • 1...Qc6
        • 2.Qh8#
        • 2.d4#
      • 1...Qd7
        • 2.Qh8#
        • 2.exd7#
      • 1...Qb4
        • 2.Qh8#
      • 1...Qc4
        • 2.Qh8#
      • 1...Qd4
        • 2.Qh8#
      • 1...Qa5
        • 2.Qh8#
        • 2.d4#
      • 1...Qa6
        • 2.Qh8#
        • 2.d4#
      • 1...Qa7
        • 2.Qh8#
      • 1...Qa8
        • 2.Qb5#
        • 2.Qh8#
        • 2.d4#
      • 1...Bd6
        • 2.Bxd6#
        • 2.Qh8#
      • 1...Ba7
        • 2.Bd6#
        • 2.Qh8#
      • 1...Bc7
        • 2.Qh8#
      • 1...Bxe4!
  • Keys
    • 1.Sd8!
      • threat
        • 2.Sf7#
      • 1...Qxb3
        • 2.Sc6#
      • 1...Qxe8
        • 2.d4#
      • 1...Qxe4
        • 2.Qb5#
      • 1...Bxe4
        • 2.Qh5#
      • 1...Qd7
        • 2.exd7#
      • 1...Qa7
        • 2.Sc6#
      • 1...Bh5
        • 2.Qxh5#

There are these versions: 175059

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 8
  • Sets
    • Q(c);N_GUARD::P(A)
    • Q(c);OGATE::QAR(K)+P(G),XQ(c)
    • Q(c);N_GUARD,XB(B)::P(A)
    • B(e);N_GUARD::B(B),XB(e)
    • B(e);N_GUARD::B(B)
  • Tries
    • Try
      • P(H);
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);XS(C)::QAB(K)
        • Q(c);N_GUARD,XQ(K)::P(A)
        • Q(c);N_GUARD,P_SPINQ(c),XP(F)::QAR(K)
        • Q(c);::QAB(K)
        • B(e);::QAB(K)
      • Refutation
        • B(b);P_SPINB(b),XP(F)
  • Actual
    • S(J);
    • Threat
      • S(J)
    • Vars
      • Q(c);N_GUARD,XS(C)::S(J)
      • Q(c);N_GUARD,XQ(K)::P(A)
      • Q(c);N_GUARD,P_SPINQ(c),XP(F)::QAR(K)
      • B(b);N_GUARD,P_SPINB(b),XP(F)::QAR(K)
      • Q(c);OGATE::QAR(K)+P(G),XQ(c)
      • Q(c);N_GUARD::S(J)
      • B(b);N_GUARD::QAR(K),XB(b)
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