MESON Chess Problem Database

Problem Display
PID: 78126 (5bB1/2p5/K2p4/Rn6/pPNk4/r2b1Pn1/4p1N1/2QR4 w - - 0 1)

Ahues, Herbert Siegfried Oskar

The Tablet, 1957

(First published on Sat Jun 29 1957)

5bB1/2p5/K2p4/Rn6/pPNk4/r2b1Pn1/4p1N1/2QR4

#2

9 + 10

15239 Valois Notebooks 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rc3
      • 2.Qe3#
    • 1...Sc3
      • 2.Qe3#
    • 1...Sa7
      • 2.Rd5#
  • Tries
    • 1.Rxd3+?
      • 1...Kxd3
        • 2.Qd2#
      • 1...Rxd3!
  • Keys
    • 1.Se5!
      • threat
        • 2.Sc6#
      • 1...Sc3+
        • 2.Rxd3#
      • 1...Sa7+
        • 2.Qc4#
      • 1...Kxe5
        • 2.Qf4#
      • 1...dxe5
        • 2.Qc4#
      • 1...Rc3
        • 2.Qe3#
      • 1...c6
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(b);SBLOCK::QAB1(A)
    • S(g);P_PINS(F),SBLOCK::QAB1(A)
    • S(g);OGATE,P_PINS(F)::R1(G)
  • Tries
    • Try
      • R(B);CHECK,XB(c)
      • Vars
        • K(f);P-FLIGHT,XR(B)::QAR1(A)
      • Refutation
        • R(b);XR(B)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • S(g);CHECK,S_CUTR(b)::R1(B),XB(c)
      • S(g);CHECK::QAR1(A)
      • K(f);N_SPINB(c),P_SPINS(g),S_FLIGHT,XS(F)::QAB1(A)
      • P(h);SBLOCK,XS(F)::QAR1(A)
      • R(b);SBLOCK::QAB1(A)
      • P(i);::S(F),XP(i)
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