MESON Chess Problem Database

Problem Display
PID: 165419 (6b1/2p4B/2R3q1/KnNkp3/Q1p1NpP1/3p1p2/5P2/3R4 w - - 0 1)

Cuperka, Stefan

Praca, 1958

6b1/2p4B/2R3q1/KnNkp3/Q1p1NpP1/3p1p2/5P2/3R4

#2

9 + 10

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Rxd3#
    • 1...Sd4
      • 2.Sc3#
  • Tries
    • 1.Rxd3+?
      • 1...Kxc6
        • 2.Qxb5#
      • 1...Sd4
        • 2.Sc3#
      • 1...cxd3!
  • Keys
    • 1.Sxd3!
      • threat
        • 2.Qxc4#
      • 1...Kd4
        • 2.Sdc5#
      • 1...Kxe4
        • 2.Sc5#
      • 1...Kxc6
        • 2.Qxb5#
      • 1...Qxe4
        • 2.Sb4#
      • 1...Qxc6
        • 2.Sxf4#
      • 1...cxd3
        • 2.Qc4#
      • 1...Sa3
        • 2.Sdc5#
      • 1...Sd4
        • 2.Sc3#
      • 1...Sd6
        • 2.Sdc5#
      • 1...c3
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • K(f);P-FLIGHT::R1(A),XP(a)
    • S(e);N_GUARD,N_SPINP(a),SBLOCK::S(D)
  • Tries
    • Try
      • R(A);CHECK,XP(a)
      • Vars
        • K(f);P_SPINS(e),S_FLIGHT,XR(H)::QAB1(C),XS(e)
        • S(e);P_SPINS(e)::S(D)
      • Refutation
        • P(c);XR(A)
  • Actual
    • S(G);XP(a)
    • Threat
      • QAB1(C),XP(c)
    • Vars
      • K(f);P-FLIGHT,P_SPINP(c)::R(A)+S(G)
      • K(f);P_SPINP(c),P_SPINQ(h),S_FLIGHT,XS(D)::S(G)
      • K(f);P_SPINS(e),S_FLIGHT,XR(H)::QAB1(C),XS(e)
      • Q(h);XS(D)::R(A)+S(G),DCHECK
      • Q(h);SBLOCK,XR(H)::R(A)+S(G),DCHECK,XP(d)
      • P(c);P_SPINP(c),XS(G)::QAB1(C)
      • S(e);N_GUARD::R(A)+S(G)
      • S(e);N_GUARD,SBLOCK::S(D)
      • P(c);::QAB1(C)
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Developed and maintained by Brian Stephenson.
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