MESON Chess Problem Database

Problem Display
PID: 191958 (4B3/3rq3/ppn1Np2/nkr2R2/p7/3PQ3/Nb2K3/1R2B3 w - - 0 1)

Rasch Nielsen, Poul Anker

2nd HM., DSK National Ty., 1937

4B3/3rq3/ppn1Np2/nkr2R2/p7/3PQ3/Nb2K3/1R2B3

#2

9 + 11

4035 Aarsskrift for DSK 1937

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Sxd4#
    • 1...Ra7
      • 2.Sd4#
    • 1...Rb7
      • 2.Sd4#
    • 1...Rc7
      • 2.Sd4#
    • 1...Sd4+
      • 2.Sxd4#
    • 1...Se5
      • 2.Sd4#
    • 1...Sa7
      • 2.Sd4#
    • 1...Sb8
      • 2.Sd4#
    • 1...Sd8
      • 2.Sd4#
  • Tries
    • 1.Rxb2+?
      • 1...Sb4
        • 2.Sd4#
      • 1...Sb3!
  • Keys
    • 1.Qe4!
      • threat
        • 2.Sc3#
      • 1...Sd4+
        • 2.Sxd4#
      • 1...Rxd3
        • 2.Qb4#
      • 1...Rd4
        • 2.Sxd4#
      • 1...Rdd5
        • 2.Qb4#
      • 1...Sb3
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
        • 2.dxc4#
      • 1...Sb7
        • 2.Qc4#
      • 1...Sb4
        • 2.Sc7#
      • 1...Se5
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 6
  • Sets
    • R(j);N_GUARD,P_SPINS(h)::S(H),XR(j)
    • R(j);N_GUARD,P_SPINS(h)::S(H)
    • S(h);CHECK,N_GUARD,S_CUTR(j)::S(H),XS(h)
    • S(h);N_GUARD,N_SPINR(e),P_SPINR(j)::S(H)
    • S(h);N_GUARD,S_CUTR(j)::S(H)
  • Tries
    • Try
      • R(A);CHECK,XB(a)
      • Vars
        • S(h);P_SPINS(h)::S(H)
      • Refutation
        • S(c);P_SPINS(c)
  • Actual
    • Q(F);
    • Threat
      • S(C)
    • Vars
      • S(h);CHECK,N_GUARD,S_CUTR(j)::S(H),XS(h)
      • R(j);P_SPINS(h),XP(E)::QAR1(F)
      • R(j);N_GUARD,P_SPINS(h)::S(H),XR(j)
      • R(j);N_SPINR(e),P_SPINS(h)::QAR1(F)
      • S(c);N_GUARD,N_SPINB(a)::QAB1(F)
      • S(c);N_GUARD::QAB1(F)
      • S(h);N_SPINB(a),S_CUTR(j)::S(H)
      • S(h);N_GUARD,N_SPINR(e),P_SPINR(j)::S(H)
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