MESON Chess Problem Database

Problem Display
PID: 184762 (5b2/2Qpp3/3P4/4k1N1/1p2B2K/1P2BP2/8/8 w - - 0 1)

Saska, Istvan

Reclam-Sammlung VI, 1908

5b2/2Qpp3/3P4/4k1N1/1p2B2K/1P2BP2/8/8

#2

8 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Bd4+?
      • 1...Kf4
        • 2.Sh3#
        • 2.Qc1#
      • 1...Kxd4!
    • 1.Qa5+?
      • 1...Kxd6
        • 2.Qc5#
      • 1...Kf6!
    • 1.Qc3+?
      • 1...Kxd6
        • 2.Qc5#
      • 1...bxc3!
    • 1.Qc4?
      • threat
        • 2.Qd4#
      • 1...Kxd6
        • 2.Sf7#
        • 2.Qc5#
      • 1...Kf6!
    • 1.Qa7?
      • threat
        • 2.Qd4#
      • 1...Kxd6
        • 2.Qc5#
        • 2.Qb8#
      • 1...Kf6!
    • 1.Qxd7?
      • threat
        • 2.Qe6#
      • 1...e6
        • 2.Qxe6#
      • 1...Kf6!
    • 1.dxe7+?
      • 1...Kf6
        • 2.exf8Q#
      • 1...d6!
  • Keys
    • 1.Qd8!
      • 1...Kxd6
        • 2.Qb8#
      • 1...Kf6
        • 2.Bd4#
      • 1...exd6
        • 2.f4#
      • 1...Bh6
        • 2.Qxe7#
      • 1...Bg7
        • 2.Qxe7#
      • 1...e6
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);CHECK
      • Refutation
        • K(b);S_FLIGHT,XB(B)
    • Try
      • Q(H);CHECK
      • Vars
        • K(b);S_FLIGHT,XP(G)::QAB1(H)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(H);CHECK
      • Vars
        • K(b);S_FLIGHT,XP(G)::QAB1(H)
      • Refutation
        • P(a);XQ(H)
    • Try
      • Q(H);
      • Threat
        • QAB1(H)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(H);
      • Threat
        • QAB1(H)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(H);XP(c)
      • Threat
        • QAR1(H)
      • Vars
        • P(d);::QAR1(H),XP(d)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(G);CHECK,XP(d)
      • Vars
        • K(b);S_FLIGHT::PXB(e)=Q
      • Refutation
        • P(c);P_SPINP(c)
  • Actual
    • Q(H);
    • Vars
      • K(b);OGATEB,P_SPINP(c),S_FLIGHT,XP(G)::QAB(H)
      • K(b);P_SPINP(d),S_FLIGHT::B(B)
      • P(d);SBLOCK,XP(G)::P(C)
      • B(e);N_GUARD::QAR2(H),XP(d)
      • P(d);SBLOCK::S(F)
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