MESON Chess Problem Database

Problem Display
PID: 125436 (8/r7/6p1/p1K5/k2N4/p5pQ/P7/6r1 w - - 0 1)

Benoit, Marc

Chess Life, 1950

8/r7/6p1/p1K5/k2N4/p5pQ/P7/6r1

#2

4 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd7
      • 2.Qxd7#
    • 1...Ra8
      • 2.Qd7#
    • 1...g2
      • 2.Qb3#
  • Keys
    • 1.Qg4!
      • threat
        • 2.Sc2#
        • 2.Se2#
        • 2.Sb3#
        • 2.Sf3#
        • 2.Sb5#
        • 2.Sf5#
        • 2.Sc6#
        • 2.Se6#
      • 1...Rc1+
        • 2.Sc2#
      • 1...Rc7+
        • 2.Sc6#
      • 1...Rb1
        • 2.Sb3#
      • 1...Rd1
        • 2.Qxd1#
      • 1...Re1
        • 2.Se2#
      • 1...Rf1
        • 2.Sf3#
      • 1...Rb7
        • 2.Sb5#
      • 1...Rd7
        • 2.Qxd7#
      • 1...Re7
        • 2.Se6#
      • 1...Rf7
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 2
  • Sets
    • R(g);N_GUARD::QAB(B),XR(g)
    • R(g);N_GUARD::QAB(B)
    • P(c);OGATE::QAB1(B)
  • Actual
    • Q(B);
    • Threat
      • DUALS(8)
    • Vars
      • R(a);CHECK::QAR(B)+S(C)
      • R(g);CHECK::QAR(B)+S(C)
      • R(a);::QAR(B)+S(C)
      • R(a);N_GUARD::QAB(B),XR(a)
      • R(g);::QAR(B)+S(C)
      • R(g);N_GUARD::QAB(B),XR(g)
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