MESON Chess Problem Database

Problem Display
PID: 229607 (2R1q3/1n3p2/2NB1Q2/p2kpP2/1p1Np3/rP2K3/B1P5/6n1 w - - 0 1)

Labai, Zoltan

Svitek, Miroslav

1st Place, The Macedonian Problemist League, 2020

2R1q3/1n3p2/2NB1Q2/p2kpP2/1p1Np3/rP2K3/B1P5/6n1

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc6
      • 2.Qxe5#
    • 1...Qd7
      • 2.Qxe5#
    • 1...Qe7
      • 2.Sxe7#
    • 1...Qxc8
      • 2.Se7#
      • 2.Qxe5#
    • 1...Qd8
      • 2.Qxe5#
    • 1...Qf8
      • 2.Qxe5#
    • 1...Qg8
      • 2.Se7#
      • 2.Qxe5#
    • 1...Qh8
      • 2.Se7#
    • 1...Rxb3+
      • 2.Bxb3#
    • 1...a4
      • 2.Sxb4#
    • 1...exd4+
      • 2.Qxd4#
  • Tries
    • 1.Be7?
      • threat
        • 2.Qxe5#
      • 1...Rxb3+
        • 2.Bxb3#
      • 1...exd4+
        • 2.Qxd4#
      • 1...Qxc6
        • 2.Qxc6#
      • 1...Qxe7
        • 2.Sxe7#
      • 1...Qh8
        • 2.Qxf7#
      • 1...Sf3!
    • 1.Rxe8?
      • threat
        • 2.Se7#
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...Rxb3+
        • 2.Bxb3#
      • 1...Sxd6
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...Sf3
        • 2.Se7#
      • 1...exd4+!
  • Keys
    • 1.Bxb4!
      • threat
        • 2.c4#
      • 1...Rxb3+
        • 2.Bxb3#
      • 1...exd4+
        • 2.Qxd4#
      • 1...Qxc6
        • 2.Qxc6#
      • 1...axb4
        • 2.Sxb4#
      • 1...Sd6
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • Q(j);N_GUARD,XS(G)::QAR1(I),XP(g)
    • Q(j);N_GUARD::QAR1(I),XP(g)
    • Q(j);N_GUARD::S(G),XQ(j)
    • Q(j);N_GUARD::S(G)
    • R(b);CHECK,OGATE,P_SPINR(b),XP(C)::B(A),XR(b)
    • P(e);N_GUARD::S(G),XP(c)
    • P(g);CHECK,OGATE,XS(E)::QAR1(I),XP(g)
  • Tries
    • Try
      • B(H);
      • Threat
        • QAR1(I),XP(g)
      • Vars
        • R(b);CHECK,OGATE,P_SPINR(b),XP(C)::B(A),XR(b)
        • P(g);CHECK,OGATE,XS(E)::QAR1(I),XP(g)
        • Q(j);OGATE,XS(G)::QAB1(I),XQ(j)
        • Q(j);XB(H)::S(G),XQ(j)
        • Q(j);N_GUARD::QAB(I),XP(i)
      • Refutation
        • S(a);
    • Try
      • R(J);XQ(j)
      • Threat
        • DUALS(3)
      • Vars
        • R(b);CHECK,OGATE,P_SPINR(b),XP(C)::B(A),XR(b)
        • S(a);::S(G)
      • Refutation
        • P(g);CHECK,XS(E)
  • Actual
    • B(H);XP(c)
    • Threat
      • P(B)
    • Vars
      • R(b);CHECK,OGATE,P_SPINR(b),XP(C)::B(A),XR(b)
      • P(g);CHECK,OGATE,XS(E)::QAR1(I),XP(g)
      • Q(j);OGATE,XS(G)::QAB1(I),XQ(j)
      • P(e);XB(H)::S(G),XP(e)
      • S(h);N_GUARD::QAR1(I),XS(h)
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