MESON Chess Problem Database

Problem Display
PID: 177920 (8/7R/2kp4/1Rp5/6p1/2N2nN1/4K2B/7Q w - - 0 1)

Leun, Evgeny

Sahs (Latvia), 1982

8/7R/2kp4/1Rp5/6p1/2N2nN1/4K2B/7Q

#2

7 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sf5?
      • 1...c4
        • 2.Sd4#
      • 1...d5
        • 2.Rc7#
      • 1...g3!
    • 1.Qxf3+?
      • 1...d5
        • 2.Qxd5#
        • 2.Qf6#
      • 1...gxf3+!
  • Keys
    • 1.Bg1!
      • 1...d5
        • 2.Qh6#
      • 1...c4
        • 2.Rb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Vars
        • P(c);N_GUARD::S(E)
        • P(e);N_SPINS(a)::R1(G)
      • Refutation
        • P(b);
    • Try
      • Q(A);CHECK,XS(a)
      • Refutation
        • P(b);CHECK,XQ(A)
  • Actual
    • B(C);
    • Vars
      • P(e);N_SPINS(a),OGATEB::QAR(A)
      • P(c);::R1(F)
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