MESON Chess Problem Database

Problem Display
PID: 198162 (4K3/3Q4/2pB2N1/1pP4R/1rk2p1R/4b2p/1PP1q2r/3N1B2 w - - 0 1)

Ellerman, Arnoldo

1st HM., Densmore MT (Pittsburgh Gazette-Times), 1920

4K3/3Q4/2pB2N1/1pP4R/1rk2p1R/4b2p/1PP1q2r/3N1B2

#2

11 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4+
      • 2.Qe6#
  • Tries
    • 1.Rxf4+?
      • 1...Bd4+
        • 2.Se3#
        • 2.Qe6#
      • 1...Bxf4+!
  • Keys
    • 1.Bxf4!
      • threat
        • 2.Sxe3#
        • 2.Bxe3#
      • 1...Bc1+
        • 2.Be3#
      • 1...Bg1+
        • 2.Be3#
      • 1...Bd2+
        • 2.Be3#
      • 1...Bf2+
        • 2.Bxe2#
      • 1...Bd4+
        • 2.Qe6#
      • 1...Bxf4+
        • 2.Se3#
      • 1...Bxc5+
        • 2.Se5#
      • 1...Qxf1
        • 2.Sxe3#
      • 1...Rxb2
        • 2.Bxe3#
      • 1...Rb3
        • 2.Bxe3#
      • 1...Ra4
        • 2.Bxe3#
      • 1...Rf2
        • 2.Sxe3#
      • 1...Rg2
        • 2.Sxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
    • B(c);CHECK,N_SPINP(g),SBLOCK::QAB(J)
  • Tries
    • Try
      • R(E);CHECK,XP(g)
      • Refutation
        • B(c);CHECK,XR(E)
  • Actual
    • B(H);XP(g)
    • Threat
      • DUALS(2)
    • Vars
      • B(c);CHECK::R(E)+B(H)
      • B(c);CHECK,S_CUTR(b)::B(B),XQ(a)
      • B(c);CHECK,SBLOCK::QAB(J)
      • B(c);CHECK,P_SPINB(c),XB(H)::S(A)
      • B(c);CHECK,SBLOCK,XP(F)::S(I)
      • Q(a);N_SPINQ(a),XB(B)::S(A),XB(c)
      • R(e);XP(C)::R(E)+B(H),XB(c)
      • R(e);::R(E)+B(H),XB(c)
      • R(b);::S(A),XB(c)
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Developed and maintained by Brian Stephenson.
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