MESON Chess Problem Database

Problem Display
PID: 78329 (4r3/2bR1b1p/1NN1k1qR/4P3/p2p4/B2Qn3/8/1K6 w - - 0 1)

Ahues, Herbert Siegfried Oskar

The Tablet, 1958

(First published on Sat Jul 5 1958)

4r3/2bR1b1p/1NN1k1qR/4P3/p2p4/B2Qn3/8/1K6

#2

8 + 9

15239 Valois Notebooks 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Qf6
      • 2.Rxf6#
    • 1...Re7
      • 2.Rxe7#
    • 1...Ra8
      • 2.Re7#
    • 1...Rb8
      • 2.Re7#
    • 1...Rc8
      • 2.Re7#
    • 1...Rd8
      • 2.Re7#
    • 1...Rf8
      • 2.Re7#
    • 1...Rg8
      • 2.Re7#
    • 1...Rh8
      • 2.Re7#
    • 1...Bxb6
      • 2.Rd6#
    • 1...Bd6
      • 2.Rxd6#
    • 1...Bd8
      • 2.Rd6#
    • 1...Sc2
      • 2.Qh3#
    • 1...Sf5
      • 2.Qc4#
  • Tries
    • 1.Bd6?
      • threat
        • 2.Sxd4#
      • 1...Bxd6
        • 2.Rxd6#
      • 1...Sc2
        • 2.Qh3#
      • 1...Sf5
        • 2.Qc4#
      • 1...Bxb6!
  • Keys
    • 1.Qe4!
      • threat
        • 2.Sxd4#
      • 1...Bxe5
        • 2.Rd6#
      • 1...Bxb6
        • 2.Rd6#
      • 1...Sc2
        • 2.Qg4#
      • 1...Sf5
        • 2.Qd5#
      • 1...d3
        • 2.Sd4#

This is a version of 78222

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 11
  • Sets
    • Q(e);N_PINQ(C),OGATE::R1(G),XQ(e)
    • R(i);N_GUARD::R1(H),XR(i)
    • R(i);N_GUARD::R1(H)
    • R(i);N_GUARD,P_PINS(E)::R1(H)
    • B(f);N_GUARD,XS(E)::R1(H)
    • B(f);N_GUARD::R1(H),XB(f)
    • B(f);N_GUARD::R1(H)
    • S(a);N_PINQ(C)::QAB(C)
    • S(a);N_PINQ(C),SBLOCK::QAB(C)
  • Tries
    • Try
      • B(B);
      • Threat
        • S(F),XP(c)
      • Vars
        • B(f);OGATE,XB(B)::R1(H),XB(f)
        • S(a);N_PINQ(C)::QAB(C)
        • S(a);N_PINQ(C),SBLOCK::QAB(C)
      • Refutation
        • B(f);XS(E)
  • Actual
    • Q(C);
    • Threat
      • S(F),XP(c)
    • Vars
      • B(f);N_GUARD,P_SPINB(f),XP(D)::R1(H)
      • B(f);N_GUARD,XS(E)::R1(H)
      • S(a);N_PINQ(C)::QAB(C)
      • S(a);N_PINQ(C),SBLOCK::QAB1(C)
      • P(c);N_PINQ(C)::S(F)
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