MESON Chess Problem Database

Problem Display
PID: 204375 (3b4/Rn1bk1N1/1BP1qRP1/n2Pp1P1/1N6/Q7/K7/8 w - - 0 1)

Mari, Alberto

Comm., Centurini/Guidelli MT, 1925

3b4/Rn1bk1N1/1BP1qRP1/n2Pp1P1/1N6/Q7/K7/8

#2

11 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Sf5#
    • 1...Qxd5+
      • 2.Sxd5#
    • 1...Qxc6
      • 2.Sxc6#
    • 1...Qd6
      • 2.Rf7#
    • 1...Sxc6
      • 2.Sxc6#
  • Tries
    • 1.Rxe6+?
      • 1...Bxe6
        • 2.Sc2#
        • 2.Sd3#
        • 2.Sa6#
        • 2.Bc5#
      • 1...Kf8!
  • Keys
    • 1.c7!
      • threat
        • 2.Sc6#
      • 1...Qxd5+
        • 2.Sxd5#
      • 1...Kd6
        • 2.Sf5#
      • 1...Ba4
        • 2.cxd8Q#
      • 1...Bb5
        • 2.cxd8Q#
      • 1...Bc6
        • 2.cxd8Q#
      • 1...Bc8
        • 2.cxd8Q#
      • 1...Be8
        • 2.cxd8Q#
      • 1...Sd6
        • 2.cxd8Q#
        • 2.cxd8B#
      • 1...Qc6
        • 2.Sxc6#
      • 1...Qd6
        • 2.Rf7#
      • 1...Sc6
        • 2.Sxc6#
      • 1...Sc5
        • 2.c8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(f);P_SPINQ(c),S_FLIGHT::S(K)
    • Q(c);CHECK,XP(D)::QAB(B)+S(C),DCHECK,XQ(c)
    • Q(c);N_PINP(D),XP(G)::QAB(B)+S(C),DCHECK,XQ(c)
    • Q(c);N_GUARD,N_PINP(D),SBLOCK::R1(H)
    • S(a);XP(G)::QAB(B)+S(C),DCHECK,XS(a)
  • Tries
    • Try
      • R(H);CHECK,N_SPINP(D),XQ(c)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • P(G);
    • Threat
      • QAB(B)+S(C),DCHECK
    • Vars
      • Q(c);CHECK,XP(D)::QAB(B)+S(C),DCHECK,XQ(c)
      • K(f);P_SPINQ(c),S_FLIGHT::S(K)
      • B(e);S_CUTS(d)::PXB(g)=Q
      • S(d);N_GUARD,SBLOCK::PXB(g)=Q
      • Q(c);N_PINP(D)::QAB(B)+S(C),DCHECK,XQ(c)
      • Q(c);N_GUARD,N_PINP(D),SBLOCK::R1(H)
      • S(a);::QAB(B)+S(C),DCHECK,XS(a)
      • S(d);S_CUTB(e)::P=S
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