MESON Chess Problem Database

Problem Display
PID: 261927 (2k1n3/1R3Q2/5n2/8/8/8/2K3p1/8 w - - 0 1)

Novis Filho, Mario

Problemnoter, 1961

2k1n3/1R3Q2/5n2/8/8/8/2K3p1/8

#2

3 + 4

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kd8
      • 2.Rb8#
    • 1...Se4
      • 2.Qd7#
    • 1...Sg4
      • 2.Qd7#
    • 1...Sd5
      • 2.Qd7#
    • 1...Sh5
      • 2.Qd7#
    • 1...Sd7
      • 2.Qxd7#
    • 1...Sh7
      • 2.Qd7#
    • 1...Sg8
      • 2.Qd7#
    • 1...Sd6
      • 2.Qc7#
    • 1...Sc7
      • 2.Qxc7#
    • 1...Sg7
      • 2.Qc7#
  • Keys
    • 1.Ra7!
      • threat
        • 2.Ra8#
      • 1...Kb8
        • 2.Qb7#
      • 1...Kd8
        • 2.Ra8#
      • 1...Sd7
        • 2.Qxe8#
      • 1...Sc7
        • 2.Qxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • K(c);N_GUARD,P-FLIGHT::R(B)
    • S(b);N_GUARD::QAB1(C)
    • S(b);N_GUARD::QAB1(C),XS(b)
    • S(d);N_GUARD::QAR1(C)
    • S(d);N_GUARD::QAR1(C),XS(d)
  • Actual
    • R(B);
    • Threat
      • R(B)
    • Vars
      • K(c);N_GUARD,P-FLIGHT::QAR1(C)
      • K(c);P-FLIGHT::R(B)
      • S(b);N_GUARD::QAR2(C),XS(d)
      • S(d);N_GUARD::QAR1(C),XS(d)
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