MESON Chess Problem Database

Problem Display
PID: 259882 (8/8/B7/1nR1BrPK/4p2N/5N1k/1qQ5/R5nr w - - 0 1)

Zaragoza, Luis

Tolosa-100 MT (Problemas), 2016

8/8/B7/1nR1BrPK/4p2N/5N1k/1qQ5/R5nr

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qxa1
      • 2.Qg2#
    • 1...Qc1
      • 2.Qg2#
    • 1...Qa3
      • 2.Qg2#
    • 1...Qc3
      • 2.Qg2#
    • 1...Qd4
      • 2.Qg2#
    • 1...Qxe5
      • 2.Qg2#
    • 1...Qb1
      • 2.Qg2#
    • 1...Qb3
      • 2.Qg2#
    • 1...Qb4
      • 2.Qg2#
    • 1...Rh2
      • 2.Sxg1#
    • 1...Rxg5+
      • 2.Sxg5#
    • 1...Se2
      • 2.Rxh1#
    • 1...Sa3
      • 2.Bf1#
    • 1...Sc3
      • 2.Bf1#
    • 1...Sd4
      • 2.Bf1#
    • 1...Sd6
      • 2.Bf1#
    • 1...Sa7
      • 2.Bf1#
    • 1...Sc7
      • 2.Bf1#
    • 1...exf3
      • 2.Qxf5#
    • 1...e3
      • 2.Qxf5#
  • Tries
    • 1.Ra3?
      • threat
        • 2.Sxg1#
      • 1...Rxg5+
        • 2.Sxg5#
      • 1...Qxa3
        • 2.Qg2#
      • 1...Rxf3
        • 2.Bc8#
      • 1...Sxa3
        • 2.Bf1#
      • 1...exf3
        • 2.Qxf5#
      • 1...Qc3
        • 2.Qg2#
      • 1...Qb3
        • 2.Qg2#
      • 1...Se2
        • 2.Sg1#
      • 1...Sc3
        • 2.Bf1#
      • 1...e3
        • 2.Qxf5#
      • 1...Sxf3!
    • 1.Qxb2?
      • threat
        • 2.Qg2#
      • 1...Rxg5+
        • 2.Sxg5#
      • 1...Rh2
        • 2.Sxg1#
        • 2.Qxh2#
      • 1...Se2
        • 2.Rxh1#
      • 1...exf3!
    • 1.Qh2+?
      • 1...Rxh2
        • 2.Sxg1#
      • 1...Qxh2!
  • Keys
    • 1.Rc3!
      • threat
        • 2.Sxg1#
      • 1...Rxg5+
        • 2.Sxg5#
      • 1...Qxc3
        • 2.Qg2#
      • 1...Rxf3
        • 2.Bc8#
      • 1...Sxf3
        • 2.Rxh1#
      • 1...Sxc3
        • 2.Bf1#
      • 1...exf3
        • 2.Qxf5#
      • 1...Se2
        • 2.Sg1#
        • 2.Rxh1#
      • 1...e3
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 15
  • Sets
    • Q(c);N_GUARD,XR(A)::QAB1(B)
    • Q(c);N_GUARD::QAB1(B)
    • Q(c);N_GUARD,XB(F)::QAB1(B)
    • R(b);N_GUARD::S(C),XS(a)
    • R(g);CHECK,XP(G)::S(C),XR(g)
    • S(a);OGATE::R(A),XR(b)
    • S(f);OGATE::B(I)
    • P(e);OGATE,XS(C)::QAB(B),XR(g)
    • P(e);OGATE::QAB(B),XR(g)
  • Tries
    • Try
      • R(A);
      • Threat
        • R(A)+S(C),DCHECK,XS(a)
      • Vars
        • R(g);CHECK,XP(G)::R(A)+S(C),DCHECK,XR(g)
        • Q(c);N_GUARD,SBLOCK,XR(A)::QAB1(B)
        • R(g);N_PINP(G),OGATEB,P_SPINR(g),XS(C)::B(I)
        • S(f);OGATE,SBLOCK,XR(A)::B(I)
        • P(e);OGATE,P_SPINP(e),XS(C)::QAB(B),XR(g)
        • Q(c);N_GUARD::QAB1(B)
        • S(a);::R(A)+S(C),DCHECK
        • S(f);OGATE::B(I)
        • P(e);OGATE::QAB(B),XR(g)
      • Refutation
        • S(a);P_SPINS(a),XS(C)
    • Try
      • Q(B);XQ(c)
      • Threat
        • QAB1(B)
      • Vars
        • R(g);CHECK,XP(G)::S(C),XR(g)
        • S(a);OGATE::R(A),XR(b)
      • Refutation
        • P(e);XS(C)
    • Try
      • Q(B);CHECK
      • Vars
        • R(b);XQ(B)::S(C),XS(a)
      • Refutation
        • Q(c);XQ(B)
  • Actual
    • R(E);
    • Threat
      • R(E)+S(C),DCHECK,XS(a)
    • Vars
      • R(g);CHECK,XP(G)::R(E)+S(C),DCHECK,XR(g)
      • Q(c);N_GUARD,XR(E)::QAB1(B)
      • R(g);N_PINP(G),OGATEB,P_SPINR(g),XS(C)::B(I)
      • S(a);OGATE,P_SPINS(a),XS(C)::R(A),XR(b)
      • S(f);OGATE,XR(E)::B(I)
      • P(e);OGATE,P_SPINP(e),XS(C)::QAB(B),XR(g)
      • P(e);OGATE::QAB(B),XR(g)
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