MESON Chess Problem Database

Problem Display
PID: 109120 (B7/p1Q1K1p1/3p2N1/5pB1/1P1k4/2N4R/p4pp1/1n3bb1 w - - 0 1)

Palkoska, Emil

Grantham Journal, 1935

B7/p1Q1K1p1/3p2N1/5pB1/1P1k4/2N4R/p4pp1/1n3bb1

#2

8 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Be2
      • 2.Sxe2#
    • 1...Bd3
      • 2.Be3#
    • 1...Bc4
      • 2.Qxa7#
    • 1...Bb5
      • 2.Sxb5#
    • 1...Sxc3
      • 2.Qxc3#
    • 1...d5
      • 2.Qf4#
      • 2.Qc5#
  • Tries
    • 1.Qb6+?
      • 1...Kc4
        • 2.Bd5#
      • 1...axb6!
    • 1.Qc6?
      • threat
        • 2.Qd5#
      • 1...Sxc3
        • 2.Qxc3#
      • 1...Bd3
        • 2.Be3#
      • 1...d5
        • 2.Qxd5#
        • 2.Qc5#
      • 1...Bc4!
  • Keys
    • 1.Se5!
      • threat
        • 2.Qxd6#
      • 1...Kxe5
        • 2.Qxd6#
      • 1...Sxc3
        • 2.Qxc3#
      • 1...dxe5
        • 2.Qc5#
      • 1...Bd3
        • 2.Sf3#
      • 1...Bc4
        • 2.Sc6#
      • 1...d5
        • 2.Be3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(b);N_GUARD::S(A),XB(b)
    • B(b);SBLOCK::B(D)
    • B(b);SBLOCK::QAB(F),XP(j)
    • S(a);OGATE,XS(A)::QAB1(F),XS(a)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(g);P-FLIGHT::B(H)
      • Refutation
        • P(j);XQ(F)
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • S(a);OGATE,XS(A)::QAB1(F),XS(a)
        • B(b);SBLOCK::B(D)
      • Refutation
        • B(b);
  • Actual
    • S(E);
    • Threat
      • QAR2(F),XP(i)
    • Vars
      • K(g);P_SPINP(i),S_FLIGHT,XS(E)::QAB1(F),XP(i)
      • S(a);OGATE,XS(A)::QAB1(F),XS(a)
      • P(i);N_GUARD,XS(E)::QAB1(F)
      • B(b);SBLOCK::S(E)
      • P(i);::B(D)
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