MESON Chess Problem Database

Problem Display
PID: 158614 (5r2/1nR5/1R5b/3k1P2/Bp2p1N1/1P2p2n/4Np2/1K3b1Q w - - 0 1)

Ahues, Herbert Siegfried Oskar

Schach-Echo, 1963

5r2/1nR5/1R5b/3k1P2/Bp2p1N1/1P2p2n/4Np2/1K3b1Q

#2

9 + 10

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Bg2
      • 2.Qd1#
  • Tries
    • 1.Sc3+?
      • 1...Kd4
        • 2.Qxe4#
      • 1...bxc3!
    • 1.Sxe3+?
      • 1...Ke5
        • 2.Re6#
        • 2.Re7#
      • 1...Bxe3!
    • 1.Sf6+?
      • 1...Ke5
        • 2.Qxe4#
      • 1...Rxf6!
    • 1.Rc4?
      • threat
        • 2.Qxe4#
      • 1...Bg2
        • 2.Qd1#
      • 1...Sg5
        • 2.Sf4#
      • 1...Sc5
        • 2.Rd4#
      • 1...Sd6
        • 2.Bc6#
      • 1...Re8!
    • 1.Rd7+?
      • 1...Kc5
        • 2.Rc6#
      • 1...Sd6!
  • Keys
    • 1.Re6!
      • threat
        • 2.Qxe4#
      • 1...Bg2
        • 2.Qd1#
      • 1...Sg5
        • 2.Sxe3#
      • 1...Sc5
        • 2.Bc6#
      • 1...Sd6
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(a);N_SPINP(f),OGATE::QAR(B)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(g);N_SPINP(f),P-FLIGHT::QAR1(B),XP(f)
      • Refutation
        • P(e);XS(C)
    • Try
      • S(F);CHECK,XP(c)
      • Refutation
        • B(h);XS(F)
    • Try
      • S(F);CHECK
      • Vars
        • K(g);N_SPINP(f),P-FLIGHT::QAR1(B),XP(f)
      • Refutation
        • R(j);XS(F)
    • Try
      • R(I);
      • Threat
        • QAB1(B),XP(f)
      • Vars
        • B(a);N_SPINP(f),OGATE::QAR(B)
        • S(d);N_GUARD,S_CUTB(h)::S(C)
        • S(i);SBLOCK::R1(I)
        • S(i);SBLOCK::B(E)
      • Refutation
        • R(j);
    • Try
      • R(I);CHECK
      • Vars
        • K(g);N_SPINP(f),P-FLIGHT::R1(H)
      • Refutation
        • S(i);P_SPINS(i)
  • Actual
    • R(H);
    • Threat
      • QAB1(B),XP(f)
    • Vars
      • B(a);N_SPINP(f),OGATE::QAR(B)
      • S(d);S_CUTB(h)::S(F),XP(c)
      • S(i);SBLOCK::B(E)
      • S(i);SBLOCK::R1(H)
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