MESON Chess Problem Database

Problem Display
PID: 82143 (2b1Q3/B4pq1/2p3p1/1PPkN3/1n2pP2/4PnK1/1N6/b1R5 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Schach-Echo, 1971

2b1Q3/B4pq1/2p3p1/1PPkN3/1n2pP2/4PnK1/1N6/b1R5

#2

10 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ba6
      • 2.Qd7#
    • 1...Bb7
      • 2.Qd7#
    • 1...Bd7
      • 2.Qxd7#
    • 1...Sa2
      • 2.Qxc6#
    • 1...Sc2
      • 2.Qxc6#
    • 1...Sd3
      • 2.Qxc6#
    • 1...Sa6
      • 2.Qxc6#
  • Tries
    • 1.Sbc4?
      • threat
        • 2.Sb6#
      • 1...Sc2
        • 2.Qxc6#
      • 1...Bc3!
    • 1.Sec4?
      • threat
        • 2.Sb6#
      • 1...Sc2
        • 2.Qxc6#
      • 1...Qc3!
    • 1.Sd7?
      • threat
        • 2.Sb6#
      • 1...Bxd7
        • 2.Qxd7#
      • 1...Qc3
        • 2.Qxf7#
      • 1...Sc2!
    • 1.Rd1+?
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sd3
        • 2.Qxc6#
      • 1...Sd2!
    • 1.Qd8+?
      • 1...Bd7
        • 2.Qxd7#
      • 1...Ke6!
  • Keys
    • 1.Sa4!
      • threat
        • 2.Sb6#
      • 1...Bc3
        • 2.Sxc3#
      • 1...Sc2
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • B(j);N_GUARD::QAR2(J)
    • B(j);N_GUARD::QAR2(J),XB(j)
    • S(c);N_GUARD::QAB1(J),XP(f)
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • S(c);N_GUARD::QAB1(J),XP(f)
      • Refutation
        • B(a);
    • Try
      • S(H);
      • Threat
        • S(H)
      • Vars
        • S(c);N_GUARD::QAB1(J),XP(f)
      • Refutation
        • Q(i);
    • Try
      • S(H);
      • Threat
        • S(H)
      • Vars
        • B(j);OGATE,XS(H)::QAR2(J),XB(j)
        • Q(i);N_GUARD::QAB(J),XP(h)
      • Refutation
        • S(c);
    • Try
      • R(A);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::R1(A),XS(b)
        • S(c);P_SPINS(c)::QAB1(J),XP(f)
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • Q(J);CHECK
      • Vars
        • B(j);N_GUARD,P_SPINB(j)::QAR2(J),XB(j)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • B(a);N_GUARD::S(B),XB(a)
      • S(c);N_GUARD::QAB1(J),XP(f)
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