MESON Chess Problem Database

Problem Display
PID: 105425 (8/8/Q1P1PB2/1KR2B1q/1N3k2/1NR2P2/P1PPpP2/r3r3 w - - 0 1)

Erokhin, Vladimir Alekseevich

Sachove umeni (Ceskoslovensky sach), 1980

8/8/Q1P1PB2/1KR2B1q/1N3k2/1NR2P2/P1PPpP2/r3r3

#2

15 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sd4?
      • threat
        • 2.Sd3#
        • 2.Sd5#
      • 1...Qxf3
        • 2.Rxf3#
      • 1...Qxf5
        • 2.Rxf5#
      • 1...Reb1
        • 2.Sxe2#
      • 1...Rab1!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Sa6#
      • 1...Qxf3
        • 2.Sd3#
      • 1...Qxf5
        • 2.Sd5#
      • 1...Rxa2
        • 2.Sxa2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • Q(e);OGATE,XP(G)::R1(F),XQ(e)
        • Q(e);OGATE,P_PINR(J),XB(K)::R1(J),XQ(e)
        • R(b);N_GUARD,P_PINS(H)::S(E),XP(c)
      • Refutation
        • R(a);P_PINS(H)
  • Actual
    • Q(L);
    • Threat
      • QAR(L)+S(H)
    • Vars
      • Q(e);SBLOCK,XP(G)::QAR(L)+S(H),DCHECK
      • Q(e);P_PINR(J),SBLOCK,XB(K)::QAR(L)+S(H),DCHECK
      • R(a);XP(A)::QAR(L)+S(H),XR(a)
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