MESON Chess Problem Database

Problem Display
PID: 105419 (q6B/3B1PN1/1r6/2PpkNP1/p2p4/1p1Q2R1/4K1p1/6br w - - 0 1)

Erokhin, Vladimir Alekseevich

Sachove umeni (Ceskoslovensky sach), 1977

q6B/3B1PN1/1r6/2PpkNP1/p2p4/1p1Q2R1/4K1p1/6br

#2

10 + 10

5007 Zadachi i Etyudi 1995
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.Qxd4#
  • Tries
    • 1.Sh4?
      • threat
        • 2.Qf5#
      • 1...Kf4
        • 2.Sh5#
      • 1...Qa6
        • 2.Se6#
      • 1...Rf6!
    • 1.Sh5+?
      • 1...Rf6
        • 2.Bxf6#
      • 1...Qxh8!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Qf5#
      • 1...Kf4
        • 2.Se6#
      • 1...Qa6
        • 2.Sh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::QAB1(B),XP(f)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAR1(B)
      • Vars
        • K(h);S_FLIGHT::S(I)
        • Q(j);N_GUARD,P_PINQ(B)::B(J)+S(I)
      • Refutation
        • R(i);
    • Try
      • S(I);CHECK
      • Vars
        • R(i);N_GUARD,P_SPINR(i)::B(J),XR(i)
      • Refutation
        • Q(j);XB(J)
  • Actual
    • S(E);
    • Threat
      • QAR1(B)
    • Vars
      • K(h);S_FLIGHT::S(I)
      • Q(j);N_GUARD,P_PINQ(B)::B(J)+S(I)
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