MESON Chess Problem Database

Problem Display
PID: 234630 (8/8/8/3K1p2/8/2pk3r/R7/2Q5 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2004

8/8/8/3K1p2/8/2pk3r/R7/2Q5

#2

3 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Qd1#
      • 2.Qc2#
  • Tries
    • 1.Re2?
      • threat
        • 2.Qd1#
        • 2.Qc2#
      • 1...c2
        • 2.Qd2#
        • 2.Qxc2#
      • 1...Rh1
        • 2.Re3#
        • 2.Qe3#
        • 2.Qc2#
      • 1...Kxe2!
    • 1.Qf4?
      • threat
        • 2.Qd4#
      • 1...Rh4
        • 2.Qg3#
        • 2.Qf3#
      • 1...c2!
    • 1.Qg1?
      • threat
        • 2.Qd4#
      • 1...Re3
        • 2.Qd1#
      • 1...Rh4
        • 2.Qg3#
      • 1...c2!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Qe2#
      • 1...Rh2
        • 2.Qg3#
      • 1...Re3
        • 2.Qd1#
      • 1...c2
        • 2.Ra3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Threat
        • DUALS(2)
      • Refutation
        • K(b);S_FLIGHT,XR(B)
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • R(c);SBLOCK::QAR2(A)
        • R(c);N_GUARD::QAR(A)
      • Refutation
        • P(a);
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • R(c);N_GUARD::QAR(A)
      • R(c);SBLOCK::QAR2(A)
      • P(a);OGATEB,SBLOCK::R(B)
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