MESON Chess Problem Database

Problem Display
PID: 212060 (r4n1q/1Np1QP1p/1r4N1/p7/2k1Pp2/KRP1b3/P1PP1n2/8 w - - 0 1)

Koci, Vladimir

Sachova skladba, 2018

r4n1q/1Np1QP1p/1r4N1/p7/2k1Pp2/KRP1b3/P1PP1n2/8

#2

11 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5
      • 2.Sxe5#
    • 1...Qg8
      • 2.Se5#
    • 1...Rf6
      • 2.Se5#
    • 1...Rb8
      • 2.Sxa5#
    • 1...Rc8
      • 2.Sxa5#
    • 1...Rd8
      • 2.Sxa5#
    • 1...Re8
      • 2.Sxa5#
    • 1...Bxd2
      • 2.Qc5#
    • 1...Bc5+
      • 2.Qxc5#
    • 1...Sd1
      • 2.d3#
    • 1...Sh1
      • 2.d3#
    • 1...Sh3
      • 2.d3#
    • 1...Sg4
      • 2.d3#
  • Tries
    • 1.Qg5?
      • threat
        • 2.Qd5#
      • 1...Rxb3+
        • 2.axb3#
      • 1...Bc5+
        • 2.Qxc5#
      • 1...Sxe4
        • 2.d3#
      • 1...Qe5
        • 2.Sxe5#
      • 1...Rb5
        • 2.Qxb5#
      • 1...Rd6
        • 2.Qb5#
      • 1...Rd8
        • 2.Sxa5#
      • 1...c6
        • 2.Sd6#
      • 1...Qd4!
    • 1.Qxc7+?
      • 1...Bc5+
        • 2.Qxc5#
      • 1...Rc6!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Qd5#
      • 1...Rxb3+
        • 2.axb3#
      • 1...Bc5+
        • 2.Qxc5#
      • 1...Qxe5
        • 2.Sxe5#
      • 1...Sxe4
        • 2.d3#
      • 1...Rb5
        • 2.Qxb5#
      • 1...Rd6
        • 2.Qb5#
      • 1...Rd8
        • 2.Sxa5#
      • 1...c6
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 10
  • Sets
    • Q(k);N_GUARD::S(H),XQ(k)
    • Q(k);N_GUARD::S(H)
    • R(f);S_CUTQ(k)::S(H)
    • R(i);N_GUARD::S(I),XP(e)
    • B(b);N_GUARD,XP(C)::QAR1(J)
    • B(b);CHECK,N_GUARD::QAR1(J),XB(b)
    • S(a);N_GUARD::P(C)
  • Tries
    • Try
      • Q(J);
      • Threat
        • QAB1(J)
      • Vars
        • R(f);CHECK,OGATE,XR(E)::P(A),XR(f)
        • B(b);CHECK,N_GUARD::QAR1(J),XB(b)
        • S(a);N_GUARD,XP(G)::P(C)
        • Q(k);N_GUARD::S(H),XQ(k)
        • R(f);N_GUARD::QAB1(J),XR(f)
        • R(f);N_GUARD::QAB1(J)
        • R(i);N_GUARD::S(I),XP(e)
        • P(g);N_GUARD,S_CUTR(f)::S(I)
      • Refutation
        • Q(k);
    • Try
      • Q(J);CHECK,XP(g)
      • Vars
        • B(b);CHECK,N_GUARD,P_SPINB(b)::QAR1(J),XB(b)
      • Refutation
        • R(f);P_SPINR(f)
  • Actual
    • Q(J);
    • Threat
      • QAB1(J)
    • Vars
      • R(f);CHECK,OGATE,XR(E)::P(A),XR(f)
      • B(b);CHECK,N_GUARD::QAR1(J),XB(b)
      • Q(k);XQ(J)::S(H),XQ(k)
      • S(a);N_GUARD,XP(G)::P(C)
      • R(f);N_GUARD::QAB1(J),XR(f)
      • R(f);N_GUARD::QAB1(J)
      • R(i);N_GUARD::S(I),XP(e)
      • P(g);N_GUARD,S_CUTR(f)::S(I)
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