MESON Chess Problem Database

Problem Display
PID: 240409 (1n3K1B/2QppPP1/5k1q/2N2Pp1/4p1p1/1b1PNp2/3n4/4b1r1 w - - 0 1)

Armeni, Alberto

Variantim, 2011

1n3K1B/2QppPP1/5k1q/2N2Pp1/4p1p1/1b1PNp2/3n4/4b1r1

#2

9 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg7+
      • 2.Bxg7#
    • 1...Qh1
      • 2.g8S#
    • 1...Qh2
      • 2.g8S#
    • 1...Qh3
      • 2.g8S#
    • 1...Qh4
      • 2.g8S#
    • 1...Qh5
      • 2.g8S#
    • 1...Qg6
      • 2.g8S#
    • 1...Qh7
      • 2.g8S#
    • 1...Qxh8+
      • 2.gxh8Q#
      • 2.gxh8B#
    • 1...Sb1
      • 2.Sxe4#
    • 1...Sf1
      • 2.Sxe4#
    • 1...Sc4
      • 2.Sxe4#
    • 1...Sa6
      • 2.Sxd7#
    • 1...Sc6
      • 2.Sxd7#
    • 1...d5
      • 2.Qxe7#
    • 1...d6
      • 2.Qxe7#
    • 1...e5
      • 2.Qd8#
  • Tries
    • 1.Qxb8?
      • threat
        • 2.Sxd7#
      • 1...Qxg7+
        • 2.Bxg7#
      • 1...Qxh8+
        • 2.gxh8Q#
        • 2.gxh8B#
      • 1...d6
        • 2.Sd7#
      • 1...Be6
        • 2.Qb2#
      • 1...d5
        • 2.Sd7#
      • 1...Ba4!
    • 1.d4?
      • threat
        • 2.Qe5#
      • 1...Qxg7+
        • 2.Bxg7#
      • 1...Qxh8+
        • 2.gxh8Q#
        • 2.gxh8B#
      • 1...Qh2
        • 2.g8S#
      • 1...Sc4
        • 2.Sxe4#
      • 1...Sc6
        • 2.Sxd7#
      • 1...d6
        • 2.Qxe7#
      • 1...e5
        • 2.Qxe5#
        • 2.Qd8#
        • 2.dxe5#
      • 1...Bg3!
  • Keys
    • 1.dxe4!
      • threat
        • 2.e5#
      • 1...Qxg7+
        • 2.Bxg7#
      • 1...Qxh8+
        • 2.gxh8Q#
        • 2.gxh8B#
      • 1...Sxe4
        • 2.Sxe4#
      • 1...d6
        • 2.Qxe7#
      • 1...Qh2
        • 2.g8S#
      • 1...Bg3
        • 2.Sxg4#
      • 1...Sc4
        • 2.Sd5#
      • 1...Sc6
        • 2.Sxd7#
      • 1...e5
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 10
  • Sets
    • Q(j);CHECK,OGATE,P_SPINQ(j),XP(G)::B(I),XQ(j)
    • Q(j);N_PINP(G)::P=S
    • Q(j);CHECK,N_PINP(G),XB(I)::PXQ(j)=Q
    • S(c);N_GUARD::S(C),XP(f)
    • S(m);N_GUARD::S(C),XP(k)
    • P(k);OGATE::QAB1(E),XP(l)
    • P(l);OGATEB,SBLOCK::QAB(E)
  • Tries
    • Try
      • Q(E);XS(m)
      • Threat
        • S(C),XP(k)
      • Vars
        • Q(j);CHECK,OGATE,P_SPINQ(j),XP(G)::B(I),XQ(j)
        • Q(j);CHECK,N_PINP(G),XB(I)::PXQ(j)=Q
        • P(k);::S(C)
        • B(d);OGATE::QAB(E)
      • Refutation
        • B(d);
    • Try
      • P(A);
      • Threat
        • QAB1(E)
      • Vars
        • Q(j);CHECK,OGATE,P_SPINQ(j),XP(G)::B(I),XQ(j)
        • Q(j);CHECK,N_PINP(G),XB(I)::PXQ(j)=Q
        • Q(j);N_PINP(G)::P=S
        • S(c);N_GUARD::S(C),XP(f)
        • S(m);N_GUARD::S(C),XP(k)
        • P(k);OGATE::QAB1(E),XP(l)
      • Refutation
        • B(a);
  • Actual
    • P(A);XP(f)
    • Threat
      • P(A)
    • Vars
      • Q(j);CHECK,OGATE,P_SPINQ(j),XP(G)::B(I),XQ(j)
      • Q(j);CHECK,N_PINP(G),XB(I)::PXQ(j)=Q
      • S(c);XP(A)::S(C),XS(c)
      • P(k);OGATE::QAB1(E),XP(l)
      • Q(j);N_PINP(G)::P=S
      • B(a);S_CUTR(b)::S(B),XP(g)
      • S(c);S_CUTB(d)::S(B)
      • S(m);N_GUARD::S(C),XP(k)
      • P(l);OGATEB,SBLOCK::QAB(E)
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