MESON Chess Problem Database

Problem Display
PID: 184330 (2R5/2n3B1/8/R1Nk4/8/8/5K2/5Q2 w - - 0 1)

Feldbrugge, Johannes Hermanus Bernardus

De Maasbode, 1926

2R5/2n3B1/8/R1Nk4/8/8/5K2/5Q2

#2

6 + 2

15601 Albrecht-Leiss-Degener Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sa6
      • 2.Qd3#
    • 1...Sa8
      • 2.Qd3#
    • 1...Se8
      • 2.Qd3#
  • Tries
    • 1.Se4+?
      • 1...Kxe4
        • 2.Qc4#
      • 1...Kc6
        • 2.Qb5#
      • 1...Sb5
        • 2.Qc4#
      • 1...Ke6!
    • 1.Sb7+?
      • 1...Ke4
        • 2.Qc4#
      • 1...Kc6
        • 2.Qb5#
      • 1...Sb5
        • 2.Qc4#
      • 1...Ke6!
    • 1.Qe2?
      • 1...Kc6
        • 2.Qe6#
      • 1...Sb5
        • 2.Qe6#
      • 1...Sa6
        • 2.Qd3#
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sa8
        • 2.Sb7#
        • 2.Qd3#
        • 2.Qe6#
      • 1...Se8
        • 2.Sb7#
        • 2.Qd3#
        • 2.Qe6#
      • 1...Kd6!
    • 1.Qg2+?
      • 1...Kc4
        • 2.Qe4#
      • 1...Kd6!
    • 1.Qa6?
      • threat
        • 2.Rd8#
      • 1...Sb5
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Se8
        • 2.Qd3#
        • 2.Qe6#
      • 1...Sxa6!
    • 1.Qd1+?
      • 1...Kc4
        • 2.Qb3#
        • 2.Qd4#
      • 1...Kc6!
    • 1.Qe1?
      • 1...Kc4
        • 2.Qe4#
      • 1...Kc6
        • 2.Qe6#
      • 1...Sb5
        • 2.Qe6#
      • 1...Sa6
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sa8
        • 2.Sb7#
        • 2.Qe6#
      • 1...Se8
        • 2.Sb7#
        • 2.Qe6#
      • 1...Kd6!
    • 1.Qh1+?
      • 1...Kc4
        • 2.Qe4#
      • 1...Kd6!
  • Keys
    • 1.Qh3!
      • 1...Kc4
        • 2.Qb3#
      • 1...Kc6
        • 2.Qe6#
      • 1...Kd6
        • 2.Qd7#
      • 1...Sb5
        • 2.Qe6#
      • 1...Sa6
        • 2.Qe6#
        • 2.Qd3#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sa8
        • 2.Qe6#
        • 2.Qd3#
      • 1...Se8
        • 2.Qe6#
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • S(b);::QAR2(A)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(a);S_FLIGHT,XS(D)::QAR2(A)
        • K(a);P_SPINS(b),S_FLIGHT::QAB1(A)
        • S(b);P_SPINS(b)::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
        • K(a);P_SPINS(b),S_FLIGHT::QAB1(A)
        • S(b);P_SPINS(b)::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P_SPINS(b),S_FLIGHT::QAR2(A)
        • S(b);N_GUARD::QAB1(A)
        • S(b);N_GUARD::QAB1(A),XS(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • R(F)
      • Vars
        • S(b);N_GUARD::QAB1(A)
        • S(b);N_GUARD::QAB1(A),XS(b)
      • Refutation
        • S(b);XQ(A)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P_SPINS(b),S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
        • K(a);P_SPINS(b),S_FLIGHT::QAR2(A)
        • S(b);N_GUARD::QAB1(A)
        • S(b);N_GUARD::QAB1(A),XS(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::QAB1(A)
      • K(a);P_SPINS(b),S_FLIGHT::QAR2(A)
      • K(a);P-FLIGHT::QAR1(A)
      • S(b);N_GUARD::QAB1(A)
      • S(b);N_GUARD::QAB1(A),XS(b)
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