MESON Chess Problem Database

Problem Display
PID: 157229 (8/qpB5/r2PpNnK/Rbb1k3/5Rp1/2p3rp/5N2/2Q5 w - - 0 1)

Ellerman, Arnoldo

Boston Transcript, 1918

8/qpB5/r2PpNnK/Rbb1k3/5Rp1/2p3rp/5N2/2Q5

#2

8 + 12

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.S2xg4#
    • 1...Rf3
      • 2.S2xg4#
    • 1...Bc6
      • 2.d7#
    • 1...Be3
      • 2.Sd3#
  • Tries
    • 1.Re4+?
      • 1...Kf5
        • 2.Qg5#
      • 1...Kxf6!
    • 1.Qe3+?
      • 1...Bxe3
        • 2.Sd3#
      • 1...Rxe3!
  • Keys
    • 1.Kg5!
      • threat
        • 2.Re4#
      • 1...Sxf4
        • 2.Qxf4#
      • 1...Re3
        • 2.S2xg4#
      • 1...Bd3
        • 2.Qxc3#
      • 1...Bc6
        • 2.d7#
      • 1...Be3
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(b);N_GUARD::S(B),XP(d)
    • B(e);P_SPINB(f),S_CUTR(h)::B(H)+P(E)
    • B(f);P_PINR(C),P_SPINB(e),S_CUTR(b)::S(B)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(g);P-FLIGHT::QAR1(A)
      • Refutation
        • K(g);S_FLIGHT,XS(F)
    • Try
      • Q(A);CHECK
      • Vars
        • B(f);P_PINR(C),P_SPINB(e),XQ(A)::S(B)
      • Refutation
        • R(b);XQ(A)
  • Actual
    • K(G);S_FLIGHT
    • Threat
      • R1(C)
    • Vars
      • S(j);OGATE,XR(C)::QAB1(A),XS(j)
      • R(b);N_GUARD::S(B),XP(d)
      • B(e);P_SPINB(f),S_CUTR(b)::QAB(A),XP(a)
      • B(e);P_SPINB(f),S_CUTR(h)::B(H)+P(E)
      • B(f);P_PINR(C),P_SPINB(e),S_CUTR(b)::S(B)
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Developed and maintained by Brian Stephenson.
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