MESON Chess Problem Database

Problem Display
PID: 36421 (8/2p5/7B/2p2N2/4KQ2/1pp2B2/1Rp1PpN1/1r1k4 w - - 0 1)

Rietveld, Johannes Jacob

Recomm., BCF 007. Ty., 1931-1932

8/2p5/7B/2p2N2/4KQ2/1pp2B2/1Rp1PpN1/1r1k4

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Qxc1#
    • 1...Rxb2
      • 2.Qc1#
    • 1...c1Q
      • 2.e3#
    • 1...c1S
      • 2.Sfe3#
    • 1...c1B
      • 2.e3#
    • 1...c1R
      • 2.Sfe3#
      • 2.e3#
    • 1...cxb2
      • 2.Qd2#
    • 1...c6
      • 2.Qd6#
  • Tries
    • 1.Qe5?
      • threat
        • 2.Qd5#
      • 1...c1Q
        • 2.e3#
      • 1...c1S
        • 2.Sfe3#
      • 1...c1B
        • 2.e3#
      • 1...c6
        • 2.Qd6#
      • 1...f1S!
    • 1.Qg5?
      • threat
        • 2.Qd8#
      • 1...c1Q
        • 2.e3#
      • 1...c1S
        • 2.Sfe3#
      • 1...c1B
        • 2.e3#
      • 1...f1S!
    • 1.Qxc7?
      • threat
        • 2.Qd6#
        • 2.Qd8#
        • 2.Qd7#
      • 1...c1Q
        • 2.e3#
      • 1...c1S
        • 2.Sfe3#
      • 1...c1B
        • 2.e3#
      • 1...f1S!
  • Keys
    • 1.Qh4!
      • threat
        • 2.Qd8#
      • 1...c1Q
        • 2.e3#
      • 1...c1S
        • 2.Sfe3#
      • 1...c1B
        • 2.e3#
      • 1...f1S
        • 2.Qe1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • R(a);N_GUARD::QAR1(F),XR(a)
    • R(a);N_GUARD,XR(A)::QAR1(F)
    • P(c);SBLOCK::B(D)+P(B)
    • P(c);SBLOCK::S(G)
    • P(f);N_GUARD,XR(A)::QAR1(F)
    • P(h);N_GUARD::QAR(F)
  • Tries
    • Try
      • Q(F);
      • Threat
        • QAR(F)
      • Vars
        • P(c);SBLOCK::B(D)+P(B)
        • P(c);SBLOCK::S(G)
        • P(h);N_GUARD::QAR(F)
      • Refutation
        • P(d);
    • Try
      • Q(F);
      • Threat
        • QAB(F)
      • Vars
        • P(c);SBLOCK::B(D)+P(B)
        • P(c);SBLOCK::S(G)
      • Refutation
        • P(d);
    • Try
      • Q(F);XP(h)
      • Threat
        • DUALS(3)
      • Vars
        • P(c);SBLOCK::B(D)+P(B)
        • P(c);SBLOCK::S(G)
      • Refutation
        • P(d);
  • Actual
    • Q(F);
    • Threat
      • QAB(F)
    • Vars
      • P(c);SBLOCK::B(D)+P(B)
      • P(c);SBLOCK::S(G)
      • P(d);OGATE::QAR1(F)
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