MESON Chess Problem Database

Problem Display
PID: 129875 (7K/8/Q2p2p1/3k2p1/3B1pB1/8/2PnN3/1b6 w - - 0 1)

Chocolous, Jiri

Tidskrift for Schack, 1907

7K/8/Q2p2p1/3k2p1/3B1pB1/8/2PnN3/1b6

#2

6 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.Qb7#
      • 2.Qa8#
    • 1...Se4
      • 2.c4#
  • Tries
    • 1.Bf5?
      • threat
        • 2.Qb5#
      • 1...Sb3
        • 2.c4#
      • 1...Se4
        • 2.c4#
      • 1...gxf5!
    • 1.Be6+?
      • 1...Ke4
        • 2.Qd3#
      • 1...Kxe6!
    • 1.Qxd6+?
      • 1...Kc4
        • 2.Qc5#
      • 1...Ke4
        • 2.Sc3#
        • 2.Qe5#
        • 2.Qc6#
        • 2.Qe6#
      • 1...Kxd6!
    • 1.c4+?
      • 1...Sxc4
        • 2.Qb7#
        • 2.Qa8#
      • 1...Ke4!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Sc3#
      • 1...Ke4
        • 2.Sc3#
      • 1...Sc4
        • 2.Qa8#
      • 1...Se4
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD,SBLOCK::P(A)
  • Tries
    • Try
      • B(D);
      • Threat
        • QAR2(E)
      • Vars
        • S(b);N_GUARD::P(A)
      • Refutation
        • P(g);XB(D)
    • Try
      • B(D);CHECK
      • Vars
        • K(d);S_FLIGHT::QAB1(E)
      • Refutation
        • K(d);P_SPINP(f),S_FLIGHT,XB(D)
    • Try
      • Q(E);CHECK,XP(f)
      • Vars
        • K(d);S_FLIGHT::QAR1(E)
      • Refutation
        • K(d);P-FLIGHT,XQ(E)
    • Try
      • P(A);CHECK
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(E);
    • Threat
      • S(B)
    • Vars
      • K(d);S_FLIGHT::S(B)
      • S(b);SBLOCK::QAB(E)
      • S(b);N_GUARD,SBLOCK::P(A)
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