MESON Chess Problem Database

Problem Display
PID: 173090 (1n1BrQ2/2NPPP2/2bk1N1b/1p4Pq/3P3p/1r2Pp2/B7/2R2K2 w - - 0 1)

Barulin, Mikhail Mikhailovich

64 Shakhmatnoe obozrenie, 1935

1n1BrQ2/2NPPP2/2bk1N1b/1p4Pq/3P3p/1r2Pp2/B7/2R2K2

#2

13 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qg4
      • 2.fxe8S#
    • 1...Qxg5
      • 2.fxe8S#
    • 1...Rb1
      • 2.Scxe8#
    • 1...Rb2
      • 2.Scxe8#
    • 1...Ra3
      • 2.Scxe8#
    • 1...Rc3
      • 2.Scxe8#
    • 1...Rd3
      • 2.Scxe8#
    • 1...Rxe3
      • 2.Scxe8#
    • 1...Rb4
      • 2.Scxe8#
    • 1...Rxe7
      • 2.Qxe7#
    • 1...Rxd8
      • 2.e8S#
    • 1...Be4
      • 2.dxe8S#
    • 1...Bd5
      • 2.dxe8S#
    • 1...Bb7
      • 2.dxe8S#
    • 1...Bxd7
      • 2.Se4#
    • 1...Ba8
      • 2.dxe8S#
    • 1...Sxd7
      • 2.Sfxe8#
  • Tries
    • 1.Rxc6+?
      • 1...Sxc6
        • 2.dxe8S#
      • 1...Kxc6!
  • Keys
    • 1.e4!
      • threat
        • 2.e5#
      • 1...Qxg5
        • 2.fxe8S#
      • 1...Rxd8
        • 2.e8S#
      • 1...Bxe4
        • 2.dxe8S#
      • 1...Sxd7
        • 2.Sfxe8#
      • 1...Re3
        • 2.Scxe8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 12
  • Sets
    • Q(e);N_GUARD::PXR(j)=S
    • Q(e);N_GUARD,XP(F)::PXR(j)=S
    • R(a);P_PINR(A)::S(H),XR(j)
    • R(a);::S(H),XR(j)
    • R(a);XP(D)::S(H),XR(j)
    • R(j);OGATE,P_SPINR(j),XP(J)::QAB1(M),XR(j)
    • R(j);OGATE,XB(L)::P=S
    • B(f);N_GUARD::PXR(j)=S
    • B(f);N_GUARD,SBLOCK,XP(I)::S(G)
    • S(i);SBLOCK,XP(I)::S(G),XR(j)
  • Tries
    • Try
      • R(A);CHECK,XB(f)
      • Vars
        • S(i);N_GUARD,SBLOCK,XR(A)::PXR(j)=S
      • Refutation
        • K(g);P-FLIGHT,XR(A)
  • Actual
    • P(D);
    • Threat
      • P(D)
    • Vars
      • Q(e);N_GUARD,XP(F)::PXR(j)=S
      • R(j);OGATE,XB(L)::P=S
      • B(f);N_GUARD,XP(D)::PXR(j)=S
      • S(i);SBLOCK,XP(I)::S(G),XR(j)
      • R(a);::S(H),XR(j)
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