MESON Chess Problem Database

Problem Display
PID: 82089 (4rb2/4Nr2/1P2QNq1/n2pP3/K1k1b3/2pR1n2/3p1B2/3B4 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Themes-64, 1961

4rb2/4Nr2/1P2QNq1/n2pP3/K1k1b3/2pR1n2/3p1B2/3B4

#2

9 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd3
      • 2.Qxd5#
    • 1...Bf5
      • 2.Qxd5#
  • Tries
    • 1.Sexd5?
      • threat
        • 2.Rxc3#
      • 1...Kxd3
        • 2.Sf4#
      • 1...Bxd3
        • 2.Se7#
      • 1...Bxd5
        • 2.Qxd5#
      • 1...c2
        • 2.Rc3#
      • 1...Bb4!
    • 1.Rd4+?
      • 1...Kc5
        • 2.Sd7#
        • 2.Qd6#
      • 1...Sxd4!
  • Keys
    • 1.Sfxd5!
      • threat
        • 2.Rxc3#
      • 1...Kxd3
        • 2.Sb4#
      • 1...Bxd3
        • 2.Sf6#
      • 1...Bxd5
        • 2.Qxd5#
      • 1...c2
        • 2.Rc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(e);N_GUARD,XR(C)::QAB1(G),XP(g)
    • B(e);N_GUARD::QAB1(G),XP(g)
  • Tries
    • Try
      • S(I);XP(g)
      • Threat
        • R1(C),XP(b)
      • Vars
        • K(d);S_FLIGHT,XR(C)::S(I)
        • B(e);N_GUARD,SBLOCK,XR(C)::QAB(G)+S(I)
        • B(e);OGATE,P_SPINB(e),XS(I)::QAB1(G),XB(e)
        • P(b);::R1(C)
      • Refutation
        • B(k);
    • Try
      • R(C);CHECK
      • Refutation
        • S(c);XR(C)
  • Actual
    • S(H);XP(g)
    • Threat
      • R1(C),XP(b)
    • Vars
      • K(d);S_FLIGHT,XR(C)::S(H)
      • B(e);N_GUARD,SBLOCK,XR(C)::QAB(G)+S(H)
      • B(e);OGATE,P_SPINB(e),XS(H)::QAB1(G),XB(e)
      • P(b);::R1(C)
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