MESON Chess Problem Database

Problem Display
PID: 234495 (4K3/2p5/5p1p/1N3p2/n1B1kBnr/1N3p2/b6p/2Q3b1 w - - 0 1)

Palkoska, Emil

Skakbladet, 1950

4K3/2p5/5p1p/1N3p2/n1B1kBnr/1N3p2/b6p/2Q3b1

#2

6 + 12

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Sc3#
    • 1...Sc3
      • 2.Sxc3#
    • 1...Sc5
      • 2.Sc3#
    • 1...Sb6
      • 2.Sc3#
    • 1...Sf2
      • 2.Qe3#
    • 1...c5
      • 2.Sd6#
    • 1...c6
      • 2.Sd6#
  • Tries
    • 1.Bd3+?
      • 1...Kd5
        • 2.Sxc7#
        • 2.Qc4#
      • 1...Kxd3!
    • 1.Bd5+?
      • 1...Kd3
        • 2.Qd2#
        • 2.Qd1#
        • 2.Qc4#
      • 1...Kxd5!
    • 1.Bg3?
      • threat
        • 2.Qf4#
      • 1...f4
        • 2.Qxf4#
      • 1...Be3
        • 2.Qc2#
      • 1...Sf2
        • 2.Qe1#
      • 1...Se3
        • 2.Sd2#
      • 1...Se5!
  • Keys
    • 1.Bxc7!
      • threat
        • 2.Qf4#
      • 1...f4
        • 2.Qxf4#
      • 1...Se5
        • 2.Sd6#
      • 1...Be3
        • 2.Qc2#
      • 1...Sf2
        • 2.Qe1#
      • 1...Se3
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • S(e);N_GUARD::S(E)
    • S(e);N_GUARD::S(E),XS(e)
    • S(g);N_GUARD,S_CUTB(a)::QAR1(A)
    • P(l);N_GUARD::S(E)
  • Tries
    • Try
      • B(C);CHECK
      • Refutation
        • K(f);S_FLIGHT,XB(C)
    • Try
      • B(C);CHECK
      • Refutation
        • K(f);S_FLIGHT,XB(C)
    • Try
      • B(D);
      • Threat
        • QAR1(A)
      • Vars
        • P(i);::QAR1(A),XP(i)
        • B(a);SBLOCK::QAB(A)
        • S(g);N_GUARD,S_CUTB(a)::QAR(A)
        • S(g);SBLOCK::S(B)
      • Refutation
        • S(g);
  • Actual
    • B(D);XP(l)
    • Threat
      • QAR1(A)
    • Vars
      • P(i);::QAR1(A),XP(i)
      • S(g);SBLOCK::S(E)
      • B(a);SBLOCK::QAB(A)
      • S(g);N_GUARD,S_CUTB(a)::QAR(A)
      • S(g);SBLOCK::S(B)
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