MESON Chess Problem Database

Problem Display
PID: 240251 (3K4/1Q1p4/pn1N2p1/k1b3r1/q7/B1N5/1R6/8 w - - 0 1)

Haring, Jacobus

Tijdschrift vd KNSB, 1954

3K4/1Q1p4/pn1N2p1/k1b3r1/q7/B1N5/1R6/8

#2

6 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bxa3
      • 2.Qxb6#
    • 1...Bxd6
      • 2.Qxb6#
  • Tries
    • 1.Rb5+?
      • 1...axb5
        • 2.Qa7#
      • 1...Qxb5!
    • 1.Qc6?
      • threat
        • 2.Sb7#
      • 1...Bxd6
        • 2.Qxb6#
      • 1...Qxc6!
    • 1.Qa7?
      • threat
        • 2.Sb7#
      • 1...Bxd6
        • 2.Qxb6#
      • 1...Qe4
        • 2.Rb5#
      • 1...Qc6!
    • 1.Qc7?
      • threat
        • 2.Sb7#
      • 1...Bxd6
        • 2.Qxb6#
      • 1...Qc6
        • 2.Sc4#
      • 1...Qe4!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Sb7#
      • 1...Qc6
        • 2.Bb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(c);N_GUARD,XB(B)::QAB1(E),XS(f)
    • B(c);N_GUARD,XS(D)::QAB1(E),XS(f)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • P(e);S_CUTQ(a),XR(A)::QAR2(E)
      • Refutation
        • Q(a);XR(A)
    • Try
      • Q(E);
      • Threat
        • S(D)
      • Vars
        • B(c);N_GUARD,XS(D)::QAB1(E),XS(f)
      • Refutation
        • Q(a);XQ(E)
    • Try
      • Q(E);P_PINP(e)
      • Threat
        • S(D)
      • Vars
        • B(c);N_GUARD,XS(D)::QAB1(E),XS(f)
        • Q(a);N_GUARD::R1(A)
      • Refutation
        • Q(a);
    • Try
      • Q(E);P_PINS(f)
      • Threat
        • S(D)
      • Vars
        • B(c);N_GUARD,XS(D)::QAB1(E),XS(f)
        • Q(a);N_GUARD::S(D)
      • Refutation
        • Q(a);
  • Actual
    • Q(E);P_PINB(c)
    • Threat
      • S(D)
    • Vars
      • Q(a);N_GUARD::B(B)
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