MESON Chess Problem Database

Problem Display
PID: 197686 (2R5/b3Kp2/3p4/1N1k4/2p2pN1/3P1n2/4b3/7Q w - - 0 1)

Dyachuk, Vasyl Vasilovich

Zadachi i Etyudi, 1997

2R5/b3Kp2/3p4/1N1k4/2p2pN1/3P1n2/4b3/7Q

#2

6 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bf1
      • 2.Qxf3#
  • Tries
    • 1.Qh5+?
      • 1...Se5
        • 2.Sf6#
      • 1...f5
        • 2.Qf7#
      • 1...Sg5!
    • 1.Qh8?
      • threat
        • 2.Sc3#
      • 1...Se5
        • 2.Sf6#
      • 1...c3
        • 2.Sxc3#
      • 1...f6
        • 2.Qg8#
      • 1...Bd4!
    • 1.dxc4+?
      • 1...Bxc4
        • 2.Qxf3#
      • 1...Ke4!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Sf6#
      • 1...Bd4
        • 2.Qa8#
      • 1...Sd4
        • 2.Sc3#
      • 1...c3
        • 2.Qa2#
      • 1...f6
        • 2.Sxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::QAB(A),XS(b)
  • Tries
    • Try
      • Q(A);CHECK,N_PINS(b)
      • Vars
        • S(b);P_SPINS(b)::S(C)
        • P(h);P_SPINP(h)::QAB(A)
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • Q(A);N_PINS(b)
      • Threat
        • S(D)
      • Vars
        • S(b);SBLOCK::S(C)
        • P(c);::S(D),XP(c)
        • P(h);OGATEB::QAB(A)
      • Refutation
        • B(g);
    • Try
      • P(B);CHECK,XP(c)
      • Vars
        • B(a);XP(B)::QAB(A),XS(b)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • Q(A);N_PINS(b)
    • Threat
      • S(C)
    • Vars
      • B(g);OGATE::QAB(A)
      • S(b);SBLOCK::S(D)
      • P(c);OGATEB::QAB(A)
      • P(h);::S(C),XP(h)
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