MESON Chess Problem Database

Problem Display
PID: 102893 (8/1Kbp2q1/4B3/p1p5/k7/2p2p2/2N5/n2Q4 w - - 0 1)

Pachman, Vladimir

Ruch, 1947

8/1Kbp2q1/4B3/p1p5/k7/2p2p2/2N5/n2Q4

#2

4 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5
      • 2.Qxd7#
    • 1...Qf6
      • 2.Qxd7#
    • 1...Qh6
      • 2.Qxd7#
    • 1...Qf8
      • 2.Qxd7#
    • 1...Qh8
      • 2.Qxd7#
    • 1...Qg1
      • 2.Qxd7#
    • 1...Qg2
      • 2.Qxd7#
    • 1...Qg3
      • 2.Qxd7#
    • 1...Qg4
      • 2.Qxd7#
    • 1...Qg5
      • 2.Qxd7#
    • 1...Qg6
      • 2.Qxd7#
    • 1...Qg8
      • 2.Qxd7#
  • Tries
    • 1.Sxa1+?
      • 1...Ka3
        • 2.Qb3#
      • 1...Kb4
        • 2.Qb3#
      • 1...Kb5
        • 2.Qb3#
      • 1...c2!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Qc4#
      • 1...Kb5
        • 2.Qc4#
      • 1...Sxc2
        • 2.Qb3#
      • 1...Qd4
        • 2.Bxd7#
      • 1...Qg4
        • 2.Qxd7#
      • 1...c4
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 11
  • Sets
    • Q(i);N_GUARD::QAB(A),XP(h)
  • Tries
    • Try
      • S(B);CHECK,XS(a)
      • Vars
        • K(d);P-FLIGHT::QAR1(A)
        • K(d);S_FLIGHT::QAR2(A)
      • Refutation
        • P(b);P_SPINP(b)
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • K(d);P_SPINP(f),S_FLIGHT::QAB1(A)
      • S(a);N_GUARD,XS(B)::QAB1(A)
      • Q(i);N_GUARD::B(C),XP(h)
      • Q(i);N_GUARD::QAB(A),XP(h)
      • P(f);::QAR2(A),XP(f)
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