MESON Chess Problem Database

Problem Display
PID: 275898 (2K5/3p4/p7/BbQ2p1N/p2rk3/8/2PP2P1/q2Nb3 w - - 0 1)

Palkoska, Emil

Probleemblad, 1953

2K5/3p4/p7/BbQ2p1N/p2rk3/8/2PP2P1/q2Nb3

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3
      • 2.Sxc3#
    • 1...Qb1
      • 2.Sc3#
    • 1...Qc1
      • 2.Sc3#
    • 1...Qa2
      • 2.Sc3#
    • 1...Rc4
      • 2.d3#
    • 1...Rd5
      • 2.Qe3#
    • 1...Bf2
      • 2.Sxf2#
    • 1...f4
      • 2.Sf6#
    • 1...d5
      • 2.Qe7#
  • Keys
    • 1.Bc3!
      • threat
        • 2.Qxd4#
      • 1...Qxc3
        • 2.Sxc3#
      • 1...Rxd2
        • 2.Qe5#
      • 1...Rd3
        • 2.Qe5#
      • 1...Rb4
        • 2.Qe5#
      • 1...Rc4
        • 2.d3#
      • 1...Rd5
        • 2.Qe3#
      • 1...Rd6
        • 2.Qe5#
      • 1...Bf2
        • 2.Sxf2#
      • 1...f4
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • Q(a);N_GUARD,P_PINQ(F)::S(A),XQ(a)
    • Q(a);N_GUARD::S(A)
    • R(d);N_GUARD,P_PINQ(F),S_CUTB(f)::P(C)
    • R(d);OGATE,SBLOCK::QAR1(F)
    • B(b);N_GUARD::S(A),XB(b)
    • P(g);SBLOCK::S(G)
    • P(i);SBLOCK::QAR(F)
  • Actual
    • B(E);
    • Threat
      • QAR1(F),XR(d)
    • Vars
      • Q(a);P_PINQ(F),XB(E)::S(A),XQ(a)
      • R(d);XP(C)::QAR1(F)
      • R(d);::QAR1(F)
      • R(d);N_GUARD,P_PINQ(F),S_CUTB(f)::P(C)
      • R(d);OGATE,SBLOCK::QAR1(F)
      • B(b);N_GUARD::S(A),XB(b)
      • P(g);SBLOCK::S(G)
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