MESON Chess Problem Database

Problem Display
PID: 187132 (2QRbr2/3p3N/5pp1/2N2kP1/K2Pp2R/1B4PP/1p4qn/2b5 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Comm., Het Belgisch Schaakbord (L'Echiquier Belge), 1995-1996

2QRbr2/3p3N/5pp1/2N2kP1/K2Pp2R/1B4PP/1p4qn/2b5

#2

11 + 11

5110 Bekroonde Problemen 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Bf4
      • 2.Rxf4#
    • 1...Sg4
      • 2.hxg4#
    • 1...e3
      • 2.Rf4#
  • Tries
    • 1.Sxe4?
      • threat
        • 2.Sd6#
      • 1...Qxg3
        • 2.Sxg3#
      • 1...Bf4
        • 2.Rxf4#
      • 1...Qxe4!
    • 1.Sb7?
      • threat
        • 2.Sd6#
      • 1...Bf4
        • 2.Rxf4#
      • 1...Qxg3!
    • 1.Rxd7?
      • threat
        • 2.Be6#
      • 1...Bxd7+
        • 2.Qxd7#
      • 1...Bf7
        • 2.Rd5#
      • 1...Qc2!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qd5#
      • 1...Qxg3
        • 2.Qxe4#
      • 1...dxc6
        • 2.Be6#
      • 1...Bf4
        • 2.Rxf4#
      • 1...Bf7
        • 2.Qxf6#
      • 1...Sf3
        • 2.Qxe4#
      • 1...Sg4
        • 2.hxg4#
      • 1...e3
        • 2.Rf4#
      • 1...d5
        • 2.Rxd5#
      • 1...d6
        • 2.Be6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::R1(F),XB(a)
    • S(d);OGATE::P(C),XS(d)
    • P(e);S_CUTB(a)::R1(F)
  • Tries
    • Try
      • S(G);XP(e)
      • Threat
        • S(G)
      • Vars
        • Q(c);XP(B)::S(G),XQ(c)
        • B(a);N_GUARD::R1(F),XB(a)
      • Refutation
        • Q(c);P_PINP(E),XS(G)
    • Try
      • S(G);
      • Threat
        • S(G)
      • Vars
        • B(a);N_GUARD::R1(F),XB(a)
      • Refutation
        • Q(c);XP(B)
    • Try
      • R(K);P_SPINR(K),XP(i)
      • Threat
        • B(A)
      • Vars
        • B(j);CHECK,OGATE,P_SPINB(j),XR(K)::QAB(J),XB(j)
        • B(j);N_PINR(K)::QAB(J)+R(K),DCHECK
      • Refutation
        • Q(c);P_PINB(A)
  • Actual
    • Q(J);N_PINP(i)
    • Threat
      • QAR2(J)
    • Vars
      • Q(c);N_GUARD,XP(B)::QAB1(J),XP(e)
      • P(i);N_GUARD,XQ(J)::B(A)
      • B(a);N_GUARD::R1(F),XB(a)
      • B(j);S_CUTR(k)::QAR1(J),XP(g)
      • S(d);S_CUTQ(c)::QAB1(J),XP(e)
      • S(d);OGATE::P(C),XS(d)
      • P(e);S_CUTB(a)::R1(F)
      • P(i);OGATE,P_PINQ(J)::R(K),XP(i)
      • P(i);N_GUARD,P_PINQ(J)::B(A)
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