MESON Chess Problem Database

Problem Display
PID: 248175 (rN6/p1p4Q/Pk2P3/6R1/8/1K6/8/8 w - - 0 1)

Rietveld, Johannes Jacob

Comm., White MT (B), 1952-1953

rN6/p1p4Q/Pk2P3/6R1/8/1K6/8/8

#2

6 + 4

14867 BCPS Library 2021

SOLUTION

  • SOUND
  • Sets
    • 1...c6
      • 2.Qb7#
  • Tries
    • 1.Ka4?
      • threat
        • 2.Rb5#
        • 2.Qb1#
      • 1...c5
        • 2.Qb7#
      • 1...c6
        • 2.Qb7#
      • 1...Rxb8!
    • 1.Qc2?
      • threat
        • 2.Qc5#
        • 2.Qc6#
      • 1...c5
        • 2.Qxc5#
      • 1...c6
        • 2.Qxc6#
      • 1...Rxb8!
    • 1.Qd3?
      • threat
        • 2.Rb5#
        • 2.Qb5#
      • 1...Rxb8
        • 2.Qb5#
      • 1...c6
        • 2.Qd8#
      • 1...c5!
    • 1.Qd7?
      • threat
        • 2.Rb5#
        • 2.Qb5#
        • 2.Qc6#
      • 1...Rxb8
        • 2.Qb5#
      • 1...c6
        • 2.Qxc6#
        • 2.Qb7#
        • 2.Qd8#
      • 1...c5!
    • 1.Qe7?
      • threat
        • 2.Qb4#
        • 2.Qc5#
      • 1...c5
        • 2.Qxc5#
      • 1...c6
        • 2.Qd8#
        • 2.Qb7#
      • 1...Rxb8!
  • Keys
    • 1.Qf5!
      • threat
        • 2.Qa5#
        • 2.Qb5#
        • 2.Qc5#
      • 1...Rxb8
        • 2.Qb5#
      • 1...c5
        • 2.Qxc5#
      • 1...c6
        • 2.Qa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATE::QAR1(E)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • P(c);OGATE::QAR1(E)
      • Refutation
        • R(d);XS(F)
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAB1(E),XP(c)
        • P(c);::QAR1(E),XP(c)
      • Refutation
        • R(d);XS(F)
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • R(d);XS(F)::QAR1(E)
        • P(c);OGATEB::QAB(E)
      • Refutation
        • P(c);
    • Try
      • Q(E);
      • Threat
        • DUALS(3)
      • Vars
        • R(d);XS(F)::QAR1(E)
      • Refutation
        • P(c);
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAB1(E),XP(c)
      • Refutation
        • R(d);XS(F)
  • Actual
    • Q(E);
    • Threat
      • DUALS(3)
    • Vars
      • R(d);XS(F)::QAR1(E)
      • P(c);::QAB1(E),XP(c)
      • P(c);::QAB1(E)
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