MESON Chess Problem Database

Problem Display
PID: 83729 (3Q4/6b1/3pNr2/K3k1P1/p1P1b1P1/2Np4/1R5r/B7 w - - 0 1)

Ellerman, Arnoldo

Problemas, 1964

3Q4/6b1/3pNr2/K3k1P1/p1P1b1P1/2Np4/1R5r/B7

#2

9 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe6
      • 2.Qe8#
    • 1...Bh6
      • 2.Qxf6#
    • 1...Bf8
      • 2.Qxf6#
  • Tries
    • 1.Rb6?
      • threat
        • 2.Qxd6#
      • 1...Kxe6
        • 2.Qe8#
      • 1...Rxe6
        • 2.Se2#
      • 1...Bf8
        • 2.Qxf6#
      • 1...d5
        • 2.Qc7#
        • 2.Qd6#
        • 2.Qb8#
      • 1...Bc6!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Qxd6#
      • 1...Kxe6
        • 2.Qe8#
      • 1...Rxe6
        • 2.Rf2#
      • 1...Bh1
        • 2.Re2#
      • 1...Bg2
        • 2.Re2#
      • 1...Bf3
        • 2.Re2#
      • 1...Bd5
        • 2.Re2#
      • 1...Bf5
        • 2.Re2#
      • 1...Bc6
        • 2.Re2#
      • 1...Bg6
        • 2.Re2#
      • 1...Bb7
        • 2.Re2#
      • 1...Bh7
        • 2.Re2#
      • 1...Ba8
        • 2.Re2#
      • 1...Bf8
        • 2.Qxf6#
      • 1...d5
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 1
  • Sets
    • K(e);OGATEB,P-FLIGHT,XS(H)::QAR2(I)
    • B(h);N_GUARD::QAB1(I),XR(g)
  • Tries
    • Try
      • R(B);
      • Threat
        • QAB1(I),XP(f)
      • Vars
        • K(e);OGATEB,P-FLIGHT,P_SPINP(f),XS(H)::QAR2(I)
        • R(g);SBLOCK,XS(H)::B(A)+S(C)
        • B(h);N_GUARD::QAB1(I),XR(g)
      • Refutation
        • B(d);
  • Actual
    • S(C);
    • Threat
      • QAB1(I),XP(f)
    • Vars
      • K(e);OGATEB,P-FLIGHT,XS(H)::QAR2(I)
      • R(g);SBLOCK,XS(H)::B(A)+R(B)
      • B(d);::B(A)+R(B),DCHECK
      • B(h);N_GUARD::QAB1(I),XR(g)
      • P(f);::QAB1(I)
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