MESON Chess Problem Database

Problem Display
PID: 237746 (8/3p3q/1K3Q2/1p1Nnp2/1ppk4/1r2N3/nb2RP2/1B6 w - - 0 1)

Ellerman, Arnoldo

Arbejder-Skak, 1953

8/3p3q/1K3Q2/1p1Nnp2/1ppk4/1r2N3/nb2RP2/1B6

#2

7 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Rd2#
  • Tries
    • 1.Sxf5+?
      • 1...Kxd5
        • 2.Be4#
        • 2.Qd6#
      • 1...Qxf5!
    • 1.Qd6?
      • threat
        • 2.Qc5#
      • 1...Rd3
        • 2.Sc2#
      • 1...Sd3
        • 2.Sc2#
      • 1...Qh6
        • 2.Sxf5#
      • 1...Qe7
        • 2.Sxf5#
      • 1...Sf3
        • 2.Qf4#
      • 1...Sg4
        • 2.Qf4#
      • 1...Sc6
        • 2.Qf4#
      • 1...Sg6
        • 2.Sxf5#
      • 1...Sf7
        • 2.Qf4#
      • 1...Qg6!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Sxb5#
      • 1...Kxc3
        • 2.Qxe5#
      • 1...Rxc3
        • 2.Qd6#
      • 1...Bxc3
        • 2.Qd6#
      • 1...Sxc3
        • 2.Rd2#
      • 1...bxc3
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);S_CUTR(c)::R(B)
  • Tries
    • Try
      • S(D);CHECK,XP(i)
      • Refutation
        • Q(k);XS(D)
    • Try
      • Q(G);N_PINS(h)
      • Threat
        • QAB1(G)
      • Vars
        • R(c);SBLOCK::S(D)
        • S(h);SBLOCK::S(D)
        • Q(k);N_GUARD,P_PINQ(G)::S(D),XP(i)
        • Q(k);N_GUARD::S(D),XP(i)
        • S(h);OGATE::QAR2(G)
        • S(h);S_CUTQ(k)::S(D),XP(i)
      • Refutation
        • Q(k);P_PINQ(G)
  • Actual
    • S(E);
    • Threat
      • S(E),XP(g)
    • Vars
      • K(f);S_FLIGHT,XS(E)::QAB(G),XS(h)
      • R(c);SBLOCK,XS(E)::QAR2(G)
      • B(b);SBLOCK,XS(E)::QAR2(G)
      • S(a);SBLOCK,XS(E)::R(B)
      • P(d);SBLOCK,XS(E)::QAR2(G)
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Developed and maintained by Brian Stephenson.
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