MESON Chess Problem Database

Problem Display
PID: 108472 (8/8/5R2/8/B2k1NP1/P7/5RPQ/2K5 w - - 0 1)

Marlo, Terho (Jaatinen, Terho)

Suomen Tehtavaniekat, 1997-1998

8/8/5R2/8/B2k1NP1/P7/5RPQ/2K5

#2

9 + 1

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qg1?
      • 1...Kc3
        • 2.Rc2#
      • 1...Ke3
        • 2.Re2#
      • 1...Kc4
        • 2.Rc2#
      • 1...Ke4
        • 2.Re2#
      • 1...Kc5
        • 2.Rc2#
      • 1...Ke5!
    • 1.Qh8?
      • 1...Kc3
        • 2.Rc6#
      • 1...Kc4
        • 2.Rc6#
      • 1...Ke4
        • 2.Re6#
      • 1...Kc5
        • 2.Rc6#
      • 1...Ke5
        • 2.Re6#
      • 1...Ke3!
  • Keys
    • 1.Rd2+!
      • 1...Kc3
        • 2.Rc6#
      • 1...Ke3
        • 2.Re6#
      • 1...Kc4
        • 2.Rc6#
      • 1...Ke4
        • 2.Re6#
      • 1...Kc5
        • 2.Rc6#
      • 1...Ke5
        • 2.Re6#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::R1(B)
        • K(a);S_FLIGHT::QAB(D)+R(B),DCHECK
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::QAB(D)+R(I),DCHECK
        • K(a);P-FLIGHT::R(I)
        • K(a);S_FLIGHT::R1(I)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(B);CHECK
    • Vars
      • K(a);S_FLIGHT::R(I)
      • K(a);P-FLIGHT::R(I)
      • K(a);S_FLIGHT::R1(I)
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