MESON Chess Problem Database

Problem Display
PID: 142582 (5Q2/5r2/2R5/8/1p3p2/1K6/8/1k6 w - - 0 1)

Larose, Franck

Phenix, 1990

5Q2/5r2/2R5/8/1p3p2/1K6/8/1k6

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Ka1
      • 2.Rc1#
  • Tries
    • 1.Qd6?
      • threat
        • 2.Qd1#
      • 1...Ka1
        • 2.Rc1#
        • 2.Qd1#
      • 1...Rd7!
    • 1.Qe7?
      • threat
        • 2.Qe1#
      • 1...Ka1
        • 2.Rc1#
        • 2.Qe1#
      • 1...Rxe7!
    • 1.Qg7?
      • threat
        • 2.Qb2#
        • 2.Qg1#
      • 1...Rf6
        • 2.Qg1#
      • 1...Rd7
        • 2.Qb2#
      • 1...Re7
        • 2.Qb2#
      • 1...Rxg7!
    • 1.Qxf7?
      • 1...Ka1
        • 2.Rc1#
      • 1...f3!
    • 1.Qc8?
      • threat
        • 2.Rc1#
      • 1...Ka1
        • 2.Rc1#
      • 1...Rc7!
    • 1.Qd8?
      • threat
        • 2.Qd1#
      • 1...Ka1
        • 2.Rc1#
        • 2.Qd1#
      • 1...Rd7!
    • 1.Qh8?
      • threat
        • 2.Qb2#
        • 2.Qh1#
      • 1...Rf6
        • 2.Qh1#
      • 1...Rd7
        • 2.Qb2#
      • 1...Re7
        • 2.Qb2#
      • 1...Rh7
        • 2.Qb2#
      • 1...Rg7!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Qg1#
        • 2.Qc1#
      • 1...Ka1
        • 2.Qg1#
        • 2.Qc1#
      • 1...Rd7
        • 2.Qc1#
      • 1...Re7
        • 2.Qc1#
      • 1...Rg7
        • 2.Qc1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT::R(B)
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAR2(C)
      • Refutation
        • R(d);
    • Try
      • Q(C);
      • Threat
        • QAR(C)
      • Refutation
        • R(d);XQ(C)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • R(d);::QAR(C)
        • R(d);::QAR1(C)
      • Refutation
        • R(d);XQ(C)
    • Try
      • Q(C);XR(d)
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • P(c);
    • Try
      • Q(C);
      • Threat
        • R1(B)
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • R(d);
    • Try
      • Q(C);
      • Threat
        • QAR2(C)
      • Refutation
        • R(d);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • R(d);::QAR(C)
        • R(d);::QAR1(C)
      • Refutation
        • R(d);
  • Actual
    • Q(C);
    • Threat
      • DUALS(2)
    • Vars
      • R(d);::QAR1(C)
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