MESON Chess Problem Database

Problem Display
PID: 161481 (1Qn1r3/1K1p1N2/1p3b2/1k1p2n1/N4r1q/1P1P1ppb/R2B4/1R3B2 w - - 0 1)

Arguelles Ferrer, Antonio Fernandez

Problemisten, 1949

1Qn1r3/1K1p1N2/1p3b2/1k1p2n1/N4r1q/1P1P1ppb/R2B4/1R3B2

#2

10 + 13

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.bxc4#
    • 1...Be6
      • 2.d4#
    • 1...Sd6+
      • 2.Sxd6#
    • 1...Sa7
      • 2.Sd6#
    • 1...Se7
      • 2.Sd6#
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qxd5#
      • 1...Sxd6+
        • 2.Sxd6#
      • 1...Bc3
        • 2.Sxc3#
      • 1...Rc4
        • 2.bxc4#
      • 1...Rd4
        • 2.Sc3#
      • 1...Rf5
        • 2.Qxd7#
      • 1...Re5
        • 2.Sc3#
      • 1...Be6
        • 2.d4#
      • 1...Bd4
        • 2.Qb4#
      • 1...Be7
        • 2.Sc3#
      • 1...Se4
        • 2.Qb4#
      • 1...Se6
        • 2.Qxd7#
      • 1...Se7
        • 2.Qxb6#
      • 1...d4
        • 2.Qb4#
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • R(d);OGATE::R(A)+P(E)DCHECK,XR(d)
    • B(c);N_GUARD,S_CUTR(m)::B(B)+P(F)
    • S(l);CHECK,N_GUARD::S(I),XS(l)
    • S(l);N_GUARD::S(I)
  • Actual
    • Q(J);
    • Threat
      • QAR2(J),XP(g)
    • Vars
      • S(l);CHECK,XQ(J)::S(I),XS(l)
      • B(j);N_GUARD::S(G),XB(j)
      • R(d);OGATE::R(A)+P(E)DCHECK,XR(d)
      • R(d);S_CUTB(j)::S(G)
      • R(d);S_CUTB(c)::QAB(J),XP(k)
      • R(m);S_CUTB(j)::S(G)
      • B(c);N_GUARD,S_CUTR(m)::B(B)+P(F)
      • B(j);S_CUTR(d)::QAR1(J)
      • B(j);N_GUARD::S(G)
      • S(h);S_CUTR(d)::QAR1(J)
      • S(h);S_CUTB(c)::QAB(J),XP(k)
      • S(l);N_GUARD::QAR1(J),XP(i)
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