MESON Chess Problem Database

Problem Display
PID: 9938 (4K3/8/8/2kP1N2/4Q3/8/1R6/3r4 w - - 0 1)

Guilbot, Fernand

Themes-64, 1960

4K3/8/8/2kP1N2/4Q3/8/1R6/3r4

#2

5 + 2

3749 FIDE Album (1959-1961) 1966
3295 Einfuhrung in die Welt des Schachproblem 1984
3310 2345 Chess Problems 1997
5626 European Junior Chess Solving Championship 2003
5405 Chess Solving Yearbook 2003 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qd4#
    • 1...Rb1
      • 2.Qd4#
    • 1...Rc1
      • 2.Qd4#
    • 1...Rf1
      • 2.Qd4#
    • 1...Rg1
      • 2.Qd4#
    • 1...Rh1
      • 2.Qd4#
    • 1...Rd4
      • 2.Qxd4#
    • 1...Rxd5
      • 2.Qc2#
  • Tries
    • 1.Rb4?
      • threat
        • 2.Qc4#
      • 1...Rd4
        • 2.Qxd4#
      • 1...Rc1
        • 2.Qd4#
      • 1...Re1!
  • Keys
    • 1.Se3!
      • threat
        • 2.Qb4#
      • 1...Kd6
        • 2.Qe7#
      • 1...Rxd5
        • 2.Qxd5#
      • 1...Rd4
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • R(a);N_GUARD::QAB1(B)
    • R(a);N_GUARD::QAB1(B),XR(a)
    • R(a);SBLOCK,XP(C)::QAR(B)
  • Tries
    • Try
      • R(A);
      • Threat
        • QAR1(B)
      • Vars
        • R(a);N_GUARD::QAB1(B),XR(a)
        • R(a);N_GUARD::QAB1(B)
      • Refutation
        • R(a);P_PINQ(B)
  • Actual
    • S(D);
    • Threat
      • QAB1(B)
    • Vars
      • K(b);S_FLIGHT::QAB1(B)
      • R(a);OGATE,XP(C)::QAR1(B),XR(a)
      • R(a);SBLOCK::QAB(B)
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