MESON Chess Problem Database

Problem Display
PID: 68302 (3Rn3/8/2KQ4/7n/7R/8/8/k7 w - - 0 1)

Rotenberg, Jacques

8th HM., The Problemist, 2006

3Rn3/8/2KQ4/7n/7R/8/8/k7

#2

4 + 3

56 The Problemist 2007

SOLUTION

  • SOUND
  • Tries
    • 1.Rh2?
      • threat
        • 2.Qd1#
      • 1...Kb1
        • 2.Qd1#
      • 1...Sxd6!
    • 1.Rb4?
      • threat
        • 2.Ra8#
      • 1...Ka2
        • 2.Ra8#
      • 1...Sc7!
    • 1.Qh2?
      • threat
        • 2.Rd1#
      • 1...Kb1
        • 2.Rd1#
      • 1...Sd6!
    • 1.Qb4?
      • threat
        • 2.Ra8#
      • 1...Ka2
        • 2.Ra8#
      • 1...Sc7!
    • 1.Qb8?
      • threat
        • 2.Ra4#
      • 1...Ka2
        • 2.Ra4#
      • 1...Sf4!
    • 1.Qd2?
      • threat
        • 2.Rh1#
      • 1...Kb1
        • 2.Rh1#
      • 1...Sg3!
  • Keys
    • 1.Rb8!
      • threat
        • 2.Ra4#
        • 2.Qa3#
      • 1...Ka2
        • 2.Ra4#
      • 1...Sxd6
        • 2.Ra4#
      • 1...Sf4
        • 2.Qa3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);
      • Threat
        • QAR(C)
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
      • Refutation
        • S(c);XQ(C)
    • Try
      • R(A);
      • Threat
        • R(D)
      • Vars
        • K(a);P-FLIGHT::R(D)
      • Refutation
        • S(c);
    • Try
      • Q(C);
      • Threat
        • R(D)
      • Vars
        • K(a);P-FLIGHT::R(D)
      • Refutation
        • S(c);
    • Try
      • Q(C);
      • Threat
        • R(D)
      • Vars
        • K(a);P-FLIGHT::R(D)
      • Refutation
        • S(c);
    • Try
      • Q(C);
      • Threat
        • R(A)
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • S(b);
    • Try
      • Q(C);
      • Threat
        • R(A)
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • S(b);
  • Actual
    • R(D);
    • Threat
      • DUALS(2)
    • Vars
      • K(a);P-FLIGHT::R(A)
      • S(c);XQ(C)::R(A)
      • S(b);::QAR2(C)
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