MESON Chess Problem Database

Problem Display
PID: 172309 (3R4/3nNk2/4p2K/2Q5/8/8/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Vecherni Krasnodar, 1996

3R4/3nNk2/4p2K/2Q5/8/8/8/8

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sc6?
      • threat
        • 2.Qe7#
      • 1...Kf6
        • 2.Qf2#
      • 1...Sf8
        • 2.Rxf8#
        • 2.Qxf8#
      • 1...Sxc5!
    • 1.Sg8?
      • threat
        • 2.Qe7#
        • 2.Qh5#
      • 1...Sf8
        • 2.Rxf8#
        • 2.Qxf8#
      • 1...e5
        • 2.Qe7#
        • 2.Qc4#
        • 2.Qd5#
      • 1...Se5
        • 2.Rf8#
        • 2.Qe7#
        • 2.Qf8#
      • 1...Sf6
        • 2.Rf8#
        • 2.Qe7#
        • 2.Qf8#
      • 1...Sxc5!
    • 1.Qh5+?
      • 1...Kf6
        • 2.Sg8#
      • 1...Kxe7!
  • Keys
    • 1.Sg6!
      • threat
        • 2.Qe7#
      • 1...Kf6
        • 2.Qf2#
      • 1...Sxc5
        • 2.Rf8#
      • 1...Sf8
        • 2.Rxf8#
        • 2.Qxf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • QAR1(A)
      • Vars
        • K(c);P-FLIGHT::QAR(A)
      • Refutation
        • S(b);XQ(A)
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Refutation
        • S(b);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT::S(C)
      • Refutation
        • K(c);P-FLIGHT,XS(C)
  • Actual
    • S(C);
    • Threat
      • QAR1(A)
    • Vars
      • K(c);P-FLIGHT::QAR(A)
      • S(b);N_GUARD,XQ(A)::R1(D)
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