MESON Chess Problem Database

Problem Display
PID: 199881 (2b1Qr2/2n3b1/4n2p/2pp1PpB/5pN1/N2k3K/2RP4/4R1B1 w - - 0 1)

Chobanyan, Shamil

Sachova skladba, 1988

2b1Qr2/2n3b1/4n2p/2pp1PpB/5pN1/N2k3K/2RP4/4R1B1

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rf6
      • 2.Se5#
    • 1...Be5
      • 2.Sxe5#
    • 1...Sd4
      • 2.Sf2#
    • 1...Sd8
      • 2.Qe2#
    • 1...d4
      • 2.Sf2#
  • Tries
    • 1.Qg6?
      • threat
        • 2.f6#
      • 1...Rxf5
        • 2.Qxf5#
      • 1...Rf6
        • 2.Se5#
      • 1...Bf6
        • 2.fxe6#
      • 1...Sd4
        • 2.Sf2#
      • 1...Sd8!
    • 1.f6?
      • threat
        • 2.Se5#
        • 2.Bg6#
        • 2.Qg6#
      • 1...Rxf6
        • 2.Se5#
      • 1...Rxe8
        • 2.Se5#
        • 2.Bg6#
      • 1...Bxf6
        • 2.Bg6#
        • 2.Qg6#
      • 1...Sxe8
        • 2.Se5#
        • 2.Bg6#
      • 1...Rf7
        • 2.Se5#
        • 2.Bg6#
      • 1...Sd8
        • 2.Qe2#
      • 1...Sd4!
  • Keys
    • 1.Bg6!
      • threat
        • 2.f6#
      • 1...Rxf5
        • 2.Bxf5#
      • 1...Rf6
        • 2.Se5#
      • 1...Bf6
        • 2.fxe6#
      • 1...Sd4
        • 2.Sf2#
      • 1...Sd8
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(k);S_CUTB(i)::S(G)
    • B(i);N_GUARD::S(G),XB(i)
    • S(f);SBLOCK::S(G)
    • S(f);OGATE::QAB1(J)
    • P(d);SBLOCK::S(G)
  • Tries
    • Try
      • Q(J);
      • Threat
        • QAB(J)+P(H)
      • Vars
        • R(k);OGATE,P_SPINR(k),XP(H)::QAB(J),XR(k)
        • R(k);S_CUTB(i)::S(G)
        • B(i);S_CUTR(k)::QAB(J)+P(H),XS(f)
        • S(f);SBLOCK::S(G)
      • Refutation
        • S(f);
    • Try
      • P(H);
      • Threat
        • DUALS(3)
      • Vars
        • R(k);XP(H)::S(G)
        • S(f);OGATE,P_PINS(G)::QAB1(J)
      • Refutation
        • S(f);P_PINS(G)
  • Actual
    • B(I);
    • Threat
      • B(I)+P(H)
    • Vars
      • R(k);OGATE,P_SPINR(k),XP(H)::B(I),XR(k)
      • R(k);S_CUTB(i)::S(G)
      • B(i);S_CUTR(k)::B(I)+P(H),XS(f)
      • S(f);SBLOCK::S(G)
      • S(f);OGATE::QAB1(J)
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