MESON Chess Problem Database

Problem Display
PID: 220532 (8/r1pNR3/Qb2N3/1r5p/8/5k2/2pP2R1/3b3K w - - 0 1)

Haring, Jacobus

Suomen Shakki, 1973

8/r1pNR3/Qb2N3/1r5p/8/5k2/2pP2R1/3b3K

#2

7 + 8

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Qd3#
    • 1...Bc5
      • 2.Qc6#
  • Tries
    • 1.Sdc5?
      • threat
        • 2.Rf7#
      • 1...Rxc5
        • 2.Qd3#
      • 1...Bxc5
        • 2.Qc6#
      • 1...Rb4
        • 2.Qf1#
        • 2.Qd3#
      • 1...c6!
  • Keys
    • 1.Sec5!
      • threat
        • 2.Rf7#
      • 1...Kf4
        • 2.Rf7#
      • 1...Rxc5
        • 2.Qf1#
      • 1...Bxc5
        • 2.Qf6#
      • 1...Rb4
        • 2.Qf1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(d);OGATE::QAR2(D)
    • B(f);OGATE::QAB(D)
  • Tries
    • Try
      • S(F);
      • Threat
        • R(G)
      • Vars
        • R(d);OGATE,XS(F)::QAR2(D)
        • B(f);OGATE,XS(F)::QAB(D)
      • Refutation
        • P(h);
  • Actual
    • S(E);
    • Threat
      • R(G)
    • Vars
      • K(c);P-FLIGHT::R(G)
      • R(d);OGATE,XS(E)::QAR2(D)
      • B(f);OGATE,XS(E)::QAR(D)
      • R(d);OGATE::QAR2(D)
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