MESON Chess Problem Database

Problem Display
PID: 190263 (8/3N1p2/r1P1Prp1/1p3P2/bpkN2n1/1R2p3/4K3/B2B3Q w - - 0 1)

Ahues, Herbert Siegfried Oskar

Suomen Shakki, 1983

8/3N1p2/r1P1Prp1/1p3P2/bpkN2n1/1R2p3/4K3/B2B3Q

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc6
      • 2.Qxc6#
    • 1...Bxb3
      • 2.Bxb3#
  • Tries
    • 1.Sxb5?
      • threat
        • 2.Sd6#
      • 1...Kxb5
        • 2.Qd5#
      • 1...Rxc6
        • 2.Qxc6#
      • 1...Bxb5
        • 2.Qe4#
      • 1...Rxe6!
    • 1.Rc3+?
      • 1...Kxd4
        • 2.Rc1#
        • 2.Rc2#
        • 2.Rc5#
      • 1...bxc3!
    • 1.Qe4?
      • threat
        • 2.Sf3#
      • 1...Rxe6
        • 2.Sxe6#
      • 1...gxf5
        • 2.Sxf5#
      • 1...Sf2!
  • Keys
    • 1.Sc2!
      • threat
        • 2.Rxb4#
      • 1...Kxb3
        • 2.Qd5#
      • 1...Bxb3
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(g);OGATE,XP(H)::QAR2(C),XR(g)
    • B(b);OGATE,XR(E)::B(B),XB(b)
  • Tries
    • Try
      • S(F);XP(f)
      • Threat
        • S(F)
      • Vars
        • K(d);P_SPINP(c),S_FLIGHT,XS(F)::QAR2(C)
        • R(g);OGATE,XP(H)::QAR2(C),XR(g)
        • B(b);SBLOCK,XS(F)::QAR2(C)
      • Refutation
        • R(h);XP(I)
    • Try
      • R(E);CHECK
      • Refutation
        • P(c);XR(E)
    • Try
      • Q(C);
      • Threat
        • QAR(C)+S(F)
      • Vars
        • R(h);XP(I)::QAR(C)+S(F),XR(h)
        • P(i);XP(G)::QAR(C)+S(F),XP(i)
      • Refutation
        • S(e);
  • Actual
    • S(F);
    • Threat
      • R1(E),XP(c)
    • Vars
      • K(d);S_FLIGHT,XR(E)::QAB(C)
      • B(b);SBLOCK,XR(E)::QAR2(C)
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