MESON Chess Problem Database

Problem Display
PID: 164306 (3b2B1/3R1N2/q6r/3P1NnR/p2Bk1Kp/2Q2p2/8/4r1n1 w - - 0 1)

Ahues, Herbert Siegfried Oskar

stern, 1998

(First published on Thu Jul 16 1998)

3b2B1/3R1N2/q6r/3P1NnR/p2Bk1Kp/2Q2p2/8/4r1n1

#2

9 + 10

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Qb7
      • 2.Qc2#
    • 1...Qa5
      • 2.Qc2#
    • 1...Qb6
      • 2.Qc2#
    • 1...Qe6
      • 2.Qc2#
    • 1...Qf6
      • 2.Qc2#
    • 1...Qg6
      • 2.Qc2#
    • 1...Qa7
      • 2.Qc2#
    • 1...Qa8
      • 2.Qc2#
    • 1...Ra1
      • 2.Qe3#
    • 1...Rb1
      • 2.Qe3#
    • 1...Rc1
      • 2.Qe3#
    • 1...Rd1
      • 2.Qe3#
    • 1...Rf1
      • 2.Qe3#
    • 1...Re3
      • 2.Qxe3#
    • 1...Rf6
      • 2.Sxg5#
    • 1...Ba5
      • 2.Sxg5#
    • 1...Bb6
      • 2.Sxg5#
    • 1...Bc7
      • 2.Sxg5#
    • 1...Se2
      • 2.Qe3#
    • 1...h3
      • 2.Sg3#
  • Tries
    • 1.S7d6+?
      • 1...Qxd6
        • 2.Qc2#
      • 1...Rxd6!
  • Keys
    • 1.Bb6!
      • threat
        • 2.Qd4#
      • 1...Qxb6
        • 2.Qc2#
      • 1...Bxb6
        • 2.Sxg5#
      • 1...Bf6
        • 2.S7d6#
      • 1...Qd3
        • 2.Qe5#
      • 1...Qc4
        • 2.Qxc4#
      • 1...Rd1
        • 2.Qe3#
      • 1...Se2
        • 2.Qe3#
      • 1...Se6
        • 2.S5d6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 16
  • Sets
    • Q(h);N_GUARD::QAB(A)
    • Q(h);N_GUARD,P_PINS(E)::QAB(A)
    • R(a);N_GUARD::QAR1(A)
    • R(a);N_GUARD::QAR1(A),XR(a)
    • R(i);S_CUTB(j)::S(H),XS(g)
    • B(j);N_GUARD::S(H),XS(g)
    • S(b);S_CUTR(a)::QAR1(A)
    • P(f);N_GUARD::S(E)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • Q(h);XS(H)::QAB(A)
      • Refutation
        • R(i);XS(H)
  • Actual
    • B(B);
    • Threat
      • QAR1(A)
    • Vars
      • Q(h);N_GUARD,XB(B)::QAB(A)
      • B(j);N_GUARD,XB(B)::S(H),XS(g)
      • B(j);S_CUTR(i)::S(H)
      • Q(h);SBLOCK::QAR1(A)
      • Q(h);N_GUARD::QAR2(A),XQ(h)
      • R(a);N_GUARD::QAR1(A)
      • S(b);S_CUTR(a)::QAR1(A)
      • S(g);S_CUTR(i)::S(E)
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