MESON Chess Problem Database

Problem Display
PID: 86597 (8/3Pp2B/2R3P1/N4P2/bp1p4/3kP1N1/pP3P2/R3K3 w Q - 0 1)

Hagedorn, Hans

Sorokin, Evgeny Pavlovich

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

Canadian Chess Chat, 1981

8/3Pp2B/2R3P1/N4P2/bp1p4/3kP1N1/pP3P2/R3K3

#2

12 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Rxd1#
    • 1...Bb5
      • 2.Rd1#
      • 2.0-0-0#
    • 1...Bxc6
      • 2.0-0-0#
    • 1...b3
      • 2.Rd1#
      • 2.0-0-0#
    • 1...dxe3
      • 2.d8Q#
      • 2.d8R#
  • Tries
    • 1.d8Q?
      • threat
        • 2.Qxd4#
      • 1...Bxc6
        • 2.0-0-0#
      • 1...e5!
    • 1.d8R?
      • threat
        • 2.Rxd4#
      • 1...Bxc6
        • 2.0-0-0#
      • 1...e5!
  • Keys
    • 1.g7!
      • threat
        • 2.f6#
      • 1...Bxc6
        • 2.0-0-0#
      • 1...dxe3
        • 2.d8Q#
        • 2.d8R#
      • 1...e5
        • 2.fxe5 ep#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(c);N_GUARD::R(A),XB(c)
    • B(c);XR(I)::0-0-0
    • P(e);XP(E)::P=Q
  • Tries
    • Try
      • P(K);P_PINP(e)
      • Threat
        • QAR1(K),XP(e)
      • Vars
        • B(c);XR(I)::0-0-0
      • Refutation
        • P(f);
    • Try
      • P(K);P_PINP(e)
      • Threat
        • R1(K),XP(e)
      • Vars
        • B(c);XR(I)::0-0-0
      • Refutation
        • P(f);
  • Actual
    • P(J);
    • Threat
      • B(L)+P(H)
    • Vars
      • B(c);XR(I)::0-0-0
      • P(e);XP(E)::P=Q
      • P(f);OGATE::B(L)+P(H),XP(f),EP
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