MESON Chess Problem Database

Problem Display
PID: 267661 (7B/5K2/pQ3n2/2nk2pR/6r1/2pP3r/N2NR3/4q3 w - - 0 1)

Chicco, Adriano

6th Prize, Die Schwalbe 085. TT, 1948

7B/5K2/pQ3n2/2nk2pR/6r1/2pP3r/N2NR3/4q3

#2

8 + 9

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qd6#
    • 1...Rd4
      • 2.Sxc3#
      • 2.Rxg5#
    • 1...Sb3
      • 2.Sxc3#
    • 1...Sxd3
      • 2.Sxc3#
    • 1...Se6
      • 2.Sxc3#
    • 1...Sb7
      • 2.Sxc3#
    • 1...Scd7
      • 2.Sxc3#
    • 1...Se4
      • 2.Sb4#
    • 1...Sxh5
      • 2.Sxc3#
    • 1...Sfd7
      • 2.Sxc3#
    • 1...Sh7
      • 2.Sxc3#
    • 1...Se8
      • 2.Sxc3#
    • 1...Sg8
      • 2.Sxc3#
  • Tries
    • 1.Sb4+?
      • 1...Kd4
        • 2.Sb3#
        • 2.Bxf6#
        • 2.Qd6#
        • 2.Qxf6#
      • 1...Rxb4!
    • 1.Rxg5+?
      • 1...Kd4
        • 2.Qd6#
      • 1...Rxg5!
    • 1.Qc6+?
      • 1...Kd4
        • 2.Qd6#
      • 1...Kxc6!
    • 1.Qe6+?
      • 1...Kd4
        • 2.Qc4#
        • 2.Qd6#
      • 1...Sxe6!
  • Keys
    • 1.d4!
      • threat
        • 2.Qxc5#
      • 1...Kxd4
        • 2.Qd6#
      • 1...Rxd4
        • 2.Rxg5#
      • 1...Sb3
        • 2.Sb4#
      • 1...Sd3
        • 2.Sxc3#
      • 1...Sa4
        • 2.Sb4#
      • 1...Sce4
        • 2.Sb4#
      • 1...Se6
        • 2.Sb4#
      • 1...Sb7
        • 2.Sb4#
      • 1...Scd7
        • 2.Sb4#
      • 1...Sfe4
        • 2.Sb4#
      • 1...Sfd7
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • K(f);N_GUARD,N_SPINP(g),P-FLIGHT,P_SPINS(e)::QAR2(F)
    • S(e);::S(A),XP(b)
    • S(e);XP(D)::S(A),XP(b)
    • S(i);S_CUTR(d)::S(A)
    • S(i);N_SPINP(g),XR(E)::S(A),XP(b)
    • S(i);::S(A),XP(b)
  • Tries
    • Try
      • S(A);CHECK
      • Refutation
        • R(d);XS(A)
    • Try
      • R(E);CHECK,XP(g)
      • Vars
        • K(f);N_GUARD,P-FLIGHT,P_SPINS(e)::QAR2(F)
      • Refutation
        • R(d);XR(E)
    • Try
      • Q(F);CHECK
      • Vars
        • K(f);N_GUARD,N_SPINP(g),P-FLIGHT,P_SPINS(i)::QAR2(F)
      • Refutation
        • K(f);N_SPINP(g),S_FLIGHT,XQ(F)
    • Try
      • Q(F);CHECK
      • Refutation
        • S(e);XQ(F)
  • Actual
    • P(D);
    • Threat
      • QAR1(F),XS(e)
    • Vars
      • K(f);N_GUARD,N_SPINP(g),P-FLIGHT,P_SPINS(e),XP(D)::QAR2(F)
      • R(d);N_GUARD,SBLOCK,XP(D)::R(E),XP(g)
      • S(e);::S(A)
      • S(e);S_CUTR(c)::S(A),XP(b)
      • S(i);::S(A)
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