MESON Chess Problem Database

Problem Display
PID: 24459 (8/8/2p5/1prp4/2kNpp2/B7/PP6/rB4QK w - - 0 1)

Overkamp, Petrus

3rd Prize, Arbejder-Skak, 1953

8/8/2p5/1prp4/2kNpp2/B7/PP6/rB4QK

#2

7 + 8

3105 FIDE Album (1945-1955) 1964

SOLUTION

  • SOUND
  • Tries
    • 1.Sb3?
      • threat
        • 2.Sd2#
        • 2.Sa5#
        • 2.Qd4#
        • 2.Qxc5#
        • 2.Qc1#
        • 2.Qf1#
      • 1...Rxa2
        • 2.Sd2#
        • 2.Sa5#
      • 1...b4
        • 2.Qxc5#
        • 2.Qf1#
      • 1...d4
        • 2.Qxd4#
      • 1...e3
        • 2.Qc1#
      • 1...Rxb1!
    • 1.Sxc6?
      • threat
        • 2.Sa5#
        • 2.Se5#
        • 2.Qd4#
        • 2.Qxc5#
        • 2.Qc1#
        • 2.Qf1#
      • 1...Rxb1
        • 2.Se5#
      • 1...Rxa2
        • 2.Sa5#
      • 1...b4
        • 2.Qf1#
      • 1...d4
        • 2.Qxd4#
      • 1...e3
        • 2.Qc1#
      • 1...Rxc6!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Sd2#
        • 2.Se5#
        • 2.Qd4#
        • 2.Qxc5#
        • 2.Qc1#
        • 2.Qf1#
      • 1...Rxb1
        • 2.Se5#
      • 1...Rxa2
        • 2.Sd2#
      • 1...exf3
        • 2.Qxc5#
      • 1...b4
        • 2.Qf1#
      • 1...d4
        • 2.Qxd4#
      • 1...e3
        • 2.Qc1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(6)
      • Vars
        • P(g);::QAR1(B),XP(g)
        • P(c);::QAR(B)
      • Refutation
        • R(a);P_PINQ(B),XB(A)
    • Try
      • S(G);XP(h)
      • Threat
        • DUALS(6)
      • Vars
        • R(a);P_PINQ(B),XB(A)::S(G)
        • R(a);XP(D)::S(G)
        • P(e);::QAB(B)
        • P(g);::QAR1(B),XP(g)
        • P(c);::QAR(B)
      • Refutation
        • R(f);XS(G)
  • Actual
    • S(G);
    • Threat
      • DUALS(6)
    • Vars
      • R(a);P_PINQ(B),XB(A)::S(G)
      • R(a);XP(D)::S(G)
      • P(c);XS(G)::QAR1(B),XR(f)
      • P(e);::QAB(B)
      • P(g);::QAR1(B),XP(g)
      • P(c);::QAR(B)
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