MESON Chess Problem Database

Problem Display
PID: 142261 (2bN3Q/Bq3P2/2p1R3/r1ppPR2/1PBkppK1/3PN3/p2P2P1/n7 w - - 0 1)

Segers, Marcel

Phenix, 1990

2bN3Q/Bq3P2/2p1R3/r1ppPR2/1PBkppK1/3PN3/p2P2P1/n7

#2

14 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb4
      • 2.Sxc6#
    • 1...Qxa7
      • 2.Sxc6#
    • 1...Qe7
      • 2.Sxc6#
    • 1...Qxf7
      • 2.Sxc6#
    • 1...Qb8
      • 2.Sxc6#
    • 1...Ra3
      • 2.Bxc5#
    • 1...Ra4
      • 2.Bxc5#
    • 1...Ra6
      • 2.Bxc5#
    • 1...Bxe6
      • 2.Sxe6#
    • 1...Sc2
      • 2.Sxc2#
    • 1...Sb3
      • 2.Sc2#
    • 1...exd3
      • 2.Rxf4#
    • 1...dxc4
      • 2.Rd6#
  • Tries
    • 1.Rxf4?
      • threat
        • 2.Sf5#
      • 1...Bxe6+
        • 2.Sxe6#
      • 1...Qxf7
        • 2.Sxc6#
      • 1...dxc4!
    • 1.Rd6?
      • threat
        • 2.e6#
      • 1...Bxf5+
        • 2.Sxf5#
      • 1...Qxf7
        • 2.Sxc6#
      • 1...Qe7
        • 2.Sxc6#
      • 1...Be6
        • 2.Sxe6#
      • 1...exd3!
  • Keys
    • 1.Qh1!
      • threat
        • 2.Qxa1#
      • 1...Qxb4
        • 2.Sxc6#
      • 1...exd3
        • 2.Rxf4#
      • 1...dxc4
        • 2.Rd6#
      • 1...Ra3
        • 2.Bxc5#
      • 1...Sc2
        • 2.Sxc2#
      • 1...Sb3
        • 2.Sc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • Q(j);N_GUARD,XP(E)::S(M),XP(i)
    • Q(j);N_GUARD,N_SPINP(g),XB(K)::S(M),XP(i)
    • Q(j);N_GUARD::S(M),XP(i)
    • Q(j);N_GUARD,XP(L)::S(M),XP(i)
    • R(f);N_GUARD::B(K),XP(g)
    • B(k);P_PINR(I),XR(J)::S(M),XB(k)
    • S(a);N_GUARD::S(D),XS(a)
    • S(a);N_GUARD::S(D)
    • P(d);OGATEB,XP(C)::R(I),XP(e)
    • P(h);OGATEB,XB(F)::R(J)
  • Tries
    • Try
      • R(I);N_PINP(g),P_PINP(d),P_SPINR(J),XP(e)
      • Threat
        • S(D)
      • Vars
        • B(k);CHECK,XR(J)::S(M),XB(k)
        • Q(j);N_GUARD,XP(L)::S(M),XP(i)
      • Refutation
        • P(h);XB(F)
    • Try
      • R(J);P_SPINR(I)
      • Threat
        • QAB(N)+P(H)
      • Vars
        • B(k);CHECK,XR(I)::S(D),XB(k)
        • Q(j);N_GUARD,XP(L)::S(M),XP(i)
        • Q(j);N_GUARD::S(M),XP(i)
        • B(k);N_GUARD::S(M),XB(k)
      • Refutation
        • P(d);XP(C)
  • Actual
    • Q(N);
    • Threat
      • QAB(N),XS(a)
    • Vars
      • Q(j);N_GUARD,XP(E)::S(M),XP(i)
      • P(d);OGATEB,XP(C)::R(I),XP(e)
      • P(h);OGATEB,XB(F)::R(J)
      • R(f);N_GUARD::B(K),XP(g)
      • S(a);N_GUARD::S(D),XS(a)
      • S(a);N_GUARD::S(D)
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