MESON Chess Problem Database

Problem Display
PID: 147256 (r7/1Q6/P2p4/pNkPn3/1Nq5/BPbB1p1p/3nP3/2R4K w - - 0 1)

Ellerman, Arnoldo

Western Morning News, 1922

(First published on Sat Jun 17 1922)

r7/1Q6/P2p4/pNkPn3/1Nq5/BPbB1p1p/3nP3/2R4K

#2

11 + 10

14868 Pirnie Collection 2013
15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd3
      • 2.Sa2#
      • 2.Sxd3#
    • 1...Qxd5
      • 2.Sa2#
      • 2.Sxd5#
      • 2.Sc6#
    • 1...Rxa6
      • 2.Sxa6#
    • 1...Ba1
      • 2.Sa2#
    • 1...Bd4
      • 2.Sa2#
    • 1...Sxd3
      • 2.Sxd3#
      • 2.Qc6#
    • 1...Sg4
      • 2.Qc6#
    • 1...Sc6
      • 2.Qxc6#
    • 1...Sg6
      • 2.Qc6#
    • 1...Sd7
      • 2.Qc6#
    • 1...Sf7
      • 2.Qc6#
  • Tries
    • 1.Sc7?
      • threat
        • 2.Se6#
      • 1...Kd4
        • 2.Sc2#
      • 1...Qxd5
        • 2.Sc6#
      • 1...Re8
        • 2.Qa7#
      • 1...Qg4!
    • 1.Qc7+?
      • 1...Sc6
        • 2.Qxc6#
      • 1...Kxb5!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Se6#
      • 1...Kxd4
        • 2.Sc2#
      • 1...Qxd5
        • 2.Sbc6#
      • 1...Qxd4
        • 2.Qb5#
      • 1...Bxd4
        • 2.Sa2#
      • 1...Re8
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • R(j);XP(J)::B(D)+S(G),DCHECK,XR(j)
    • B(b);N_GUARD,P_SPINQ(e)::B(D)+S(G)
    • S(h);N_GUARD::QAR1(K)
    • S(h);N_GUARD::QAR1(K),XS(h)
  • Tries
    • Try
      • S(H);
      • Threat
        • S(H)
      • Vars
        • K(g);S_FLIGHT::S(G)
        • Q(e);N_GUARD,P_SPINB(b),XP(I)::B(D)+S(G)
        • R(j);N_GUARD::QAB(K)
      • Refutation
        • Q(e);P_SPINB(b)
    • Try
      • Q(K);CHECK
      • Vars
        • S(h);N_GUARD,P_SPINS(h)::QAR1(K),XS(h)
      • Refutation
        • K(g);P-FLIGHT,P_SPINQ(e),XS(H)
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • K(g);S_FLIGHT,XS(H)::S(G)
      • Q(e);N_GUARD,P_SPINB(b),SBLOCK,XP(I)::B(D)+S(G)
      • Q(e);N_GUARD,P_SPINB(b),SBLOCK,XS(H)::QAR1(K)
      • B(b);N_GUARD,P_SPINQ(e),SBLOCK,XS(H)::B(D)+S(G)
      • R(j);N_GUARD::QAB(K)
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