MESON Chess Problem Database

Problem Display
PID: 693 (1nB5/2rq1R2/8/7p/Rb1Qb1kp/7p/2P4P/2BK4 w - - 0 1)

Ellerman, Arnoldo

British Chess Magazine, 1936

1nB5/2rq1R2/8/7p/Rb1Qb1kp/7p/2P4P/2BK4

#2

8 + 9

5137 1001 Problemas 1945
274 diagrammes 1973

SOLUTION

  • SOUND
  • Sets
    • 1...Qf5
      • 2.Qxe4#
    • 1...Qe6
      • 2.Bxe6#
      • 2.Qxe4#
    • 1...Qxc8
      • 2.Qxe4#
    • 1...Bd2
      • 2.Qg1#
    • 1...Bd6
      • 2.Qg7#
  • Tries
    • 1.Bd2?
      • threat
        • 2.Qxe4#
      • 1...Bxd2
        • 2.Qg1#
      • 1...Bd6
        • 2.Qg7#
      • 1...Rc4!
    • 1.Bxd7+?
      • 1...Sxd7
        • 2.Qxe4#
      • 1...Rxd7!
  • Keys
    • 1.Bh6!
      • threat
        • 2.Rf4#
      • 1...Qf5
        • 2.Qxe4#
      • 1...Bd2
        • 2.Qg1#
      • 1...Bd6
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • Q(h);N_PINQ(F)::QAR2(F),XB(c)
    • Q(h);N_PINQ(F),N_SPINQ(h),XB(H)::QAR2(F),XB(c)
    • B(b);N_PINQ(F)::QAR(F)
  • Tries
    • Try
      • B(A);N_SPINQ(F)
      • Threat
        • QAR2(F),XB(c)
      • Vars
        • B(b);XB(A)::QAR(F)
        • B(b);::QAR(F)
      • Refutation
        • R(g);
    • Try
      • B(H);CHECK,N_SPINQ(F),XQ(h)
      • Vars
        • S(i);XB(H)::QAR2(F),XB(c)
      • Refutation
        • R(g);P_PINQ(F),XB(H)
  • Actual
    • B(A);
    • Threat
      • R1(G)
    • Vars
      • Q(h);N_PINQ(F)::QAR2(F),XB(c)
      • B(b);N_PINQ(F)::QAR(F)
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