MESON Chess Problem Database

Problem Display
PID: 146183 (5nq1/2ppK1pb/1p1Np3/nR1PkP1R/3p1p2/B7/1P2P2P/4Q3 w - - 0 1)

Anonymous

La Strategie, 1908

5nq1/2ppK1pb/1p1Np3/nR1PkP1R/3p1p2/B7/1P2P2P/4Q3

#2

11 + 12

119 Tidskrift for Schack 1909

SOLUTION

  • SOUND
  • Sets
    • 1...Bg6
      • 2.fxg6#
    • 1...Sc6+
      • 2.dxc6#
    • 1...Sg6+
      • 2.fxg6#
    • 1...d3
      • 2.Qc3#
    • 1...f3
      • 2.Qg3#
    • 1...c5
      • 2.dxc5 ep#
    • 1...c6
      • 2.dxc6#
    • 1...g5
      • 2.fxg5 ep#
    • 1...g6
      • 2.fxg6#
  • Tries
    • 1.Qb1?
      • threat
        • 2.Qe4#
      • 1...Qf7+
        • 2.Sxf7#
      • 1...Sc6+
        • 2.dxc6#
      • 1...Sg6+
        • 2.fxg6#
      • 1...cxd6
        • 2.Bxd6#
      • 1...d3!
    • 1.Qh1?
      • threat
        • 2.Qe4#
      • 1...Qf7+
        • 2.Sxf7#
      • 1...Sc6+
        • 2.dxc6#
      • 1...Sg6+
        • 2.fxg6#
      • 1...cxd6
        • 2.Bxd6#
      • 1...f3!
    • 1.fxe6+?
      • 1...Bf5
        • 2.Rxf5#
      • 1...g5!
  • Keys
    • 1.e4!
      • 1...Qf7+
        • 2.Sxf7#
      • 1...Sc6+
        • 2.dxc6#
      • 1...Sg6+
        • 2.fxg6#
      • 1...Bxf5
        • 2.exf5#
      • 1...exd5
        • 2.exd5#
      • 1...exf5
        • 2.exf5#
      • 1...cxd6
        • 2.Bxd6#
      • 1...dxe4 ep
        • 2.Qc3#
      • 1...fxe4 ep
        • 2.Qg3#
      • 1...d3
        • 2.Qc3#
      • 1...f3
        • 2.Qg3#
      • 1...Qh8
        • 2.Sf7#
      • 1...Bg6
        • 2.fxg6#
      • 1...Sb3
        • 2.Sc4#
      • 1...Sc4
        • 2.Sxc4#
      • 1...Sb7
        • 2.Sc4#
      • 1...c5
        • 2.dxc5 ep#
      • 1...c6
        • 2.dxc6#
      • 1...g5
        • 2.fxg5 ep#
      • 1...g6
        • 2.fxg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • B(j);OGATE::R(I)+P(H),XB(j)
    • S(c);CHECK,OGATE::R(F)+P(G),XS(c)
    • S(k);CHECK,OGATE::R(I)+P(H),XS(k)
    • P(a);OGATEB::QAB(A)
    • P(b);OGATEB::QAB(A)
    • P(g);OGATE::R(F)+P(G),XP(g),EP
    • P(g);OGATE::R(F)+P(G),XP(g)
    • P(i);OGATE::R(I)+P(H),XP(i),EP
    • P(i);OGATE::R(I)+P(H),XP(i)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • Q(l);CHECK,N_GUARD::S(J),XQ(l)
        • S(c);CHECK,OGATE::R(F)+P(G),XS(c)
        • S(k);CHECK,OGATE::R(I)+P(H),XS(k)
        • P(g);OGATE,XS(J)::B(E),XP(g)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • Q(l);CHECK,N_GUARD::S(J),XQ(l)
        • S(c);CHECK,OGATE::R(F)+P(G),XS(c)
        • S(k);CHECK,OGATE::R(I)+P(H),XS(k)
        • P(g);OGATE,XS(J)::B(E),XP(g)
      • Refutation
        • P(b);
    • Try
      • P(H);CHECK,XP(f)
      • Vars
        • B(j);N_GUARD,P_SPINB(j)::R1(I),XB(j)
      • Refutation
        • P(i);P_SPINP(i)
  • Actual
    • P(C);
    • Vars
      • Q(l);CHECK,N_GUARD::S(J),XQ(l)
      • S(c);CHECK,OGATE::R(F)+P(G),XS(c)
      • S(k);CHECK,OGATE::R(I)+P(H),XS(k)
      • B(j);OGATE,P_SPINB(j),XP(H)::QAR(A)+P(C),XB(j)
      • P(f);OGATE,P_SPINP(f),XP(G)::QAR(A)+P(C),XP(f)
      • P(f);OGATE,P_SPINP(f),XP(H)::QAR(A)+P(C),XP(f)
      • P(g);OGATE,XS(J)::B(E),XP(g)
      • P(a);EP,OGATEB,P_SPINP(a),XP(C)::QAB(A)
      • P(b);EP,OGATEB,P_SPINP(b),XP(C)::QAB(A)
      • P(a);OGATEB::QAB(A)
      • P(b);OGATEB::QAB(A)
      • Q(l);N_GUARD::S(J)
      • B(j);OGATE::R(I)+P(H),XB(j)
      • S(c);N_GUARD::S(J)
      • S(c);N_GUARD::S(J),XS(c)
      • P(g);OGATE::R(F)+P(G),XP(g),EP
      • P(g);OGATE::R(F)+P(G),XP(g)
      • P(i);OGATE::R(I)+P(H),XP(i),EP
      • P(i);OGATE::R(I)+P(H),XP(i)
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