MESON Chess Problem Database

Problem Display
PID: 181063 (8/3B2P1/1B1p2nb/3kp1n1/4R3/3b2P1/1N4P1/K7 w - - 0 1)

Baroch, Jaroslav

Pravo lidu, 1904

8/3B2P1/1B1p2nb/3kp1n1/4R3/3b2P1/1N4P1/K7

#2

8 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe4
      • 2.g8Q#
      • 2.g8B#
  • Tries
    • 1.Sa4?
      • threat
        • 2.Sc3#
      • 1...Kxe4
        • 2.Sc3#
      • 1...Sxe4
        • 2.g8Q#
        • 2.g8B#
      • 1...Bxe4!
    • 1.g8Q+?
      • 1...Se6
        • 2.Qa8#
      • 1...Sf7
        • 2.Qa8#
      • 1...Kxe4!
  • Keys
    • 1.Sd1!
      • threat
        • 2.Sc3#
      • 1...Kxe4
        • 2.Sc3#
      • 1...Bxe4
        • 2.Se3#
      • 1...Sxe4
        • 2.g8Q#
        • 2.g8B#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(d);N_GUARD,SBLOCK,XR(E)::P=Q
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • K(b);S_FLIGHT,XR(E)::S(B)
        • S(d);N_GUARD,SBLOCK,XR(E)::P=Q
      • Refutation
        • B(a);XR(E)
    • Try
      • P(H);CHECK
      • Vars
        • S(d);P_SPINS(d)::QAB(H)
      • Refutation
        • K(b);S_FLIGHT,XR(E)
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • K(b);S_FLIGHT,XR(E)::S(B)
      • B(a);SBLOCK,XR(E)::S(B)
      • S(d);N_GUARD,SBLOCK,XR(E)::P=Q
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