MESON Chess Problem Database

Problem Display
PID: 36845 (4K3/1p2N1P1/2pp1p2/1p2bQ1p/1Pk4q/5Rp1/PnN1r2r/2R2B2 w - - 0 1)

Frei-Schuler, Gottlieb

Zurcher Woche, 1970

4K3/1p2N1P1/2pp1p2/1p2bQ1p/1Pk4q/5Rp1/PnN1r2r/2R2B2

#2

10 + 13

3690 Kunstschach in der Schweiz 1980

SOLUTION

  • SOUND
  • Sets
    • 1...Bf4
      • 2.Qe4#
    • 1...Sd1
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
    • 1...Sa4
      • 2.Qd3#
  • Tries
    • 1.Bxe2+?
      • 1...Sd3
        • 2.Qxd3#
      • 1...Rxe2!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Sb6#
      • 1...Bc3+
        • 2.Sde3#
      • 1...Bd4+
        • 2.Sce3#
      • 1...Bf4+
        • 2.Qe4#
      • 1...Kxd5
        • 2.g8Q#
        • 2.g8B#
      • 1...cxd5
        • 2.Qc8#
      • 1...Qd4
        • 2.Sce3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sa4
        • 2.Qd3#
      • 1...b6
        • 2.Sxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • B(h);N_GUARD,P_PINS(H),S_CUTQ(f)::QAR2(G)
    • S(a);N_GUARD::QAB1(G)
    • S(a);N_GUARD,N_SPINR(b)::QAB1(G),XS(a)
  • Tries
    • Try
      • B(B);CHECK,XR(b)
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(G),XS(a)
      • Refutation
        • R(c);XB(B)
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • B(h);CHECK,SBLOCK::S(H)
      • B(h);CHECK,SBLOCK::R(A)+S(D),DCHECK
      • B(h);CHECK,N_GUARD,S_CUTQ(f)::QAR2(G)
      • K(e);N_SPINR(b),P_SPINB(h),S_FLIGHT,XS(H)::P=Q
      • P(j);OGATEB,SBLOCK,XS(H)::QAR(G)
      • Q(f);SBLOCK::R(A)+S(D),DCHECK
      • S(a);N_GUARD,N_SPINR(b)::QAB1(G),XS(a)
      • S(a);N_GUARD::QAB1(G)
      • P(m);::S(H),XP(m)
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