MESON Chess Problem Database

Problem Display
PID: 206544 (8/3p2N1/1ppK1p1r/1P3Qpp/1p1k3b/3P1Rn1/1PP5/Nbn5 w - - 0 1)

Dent, Robert

Brisbane Courier, 1925

8/3p2N1/1ppK1p1r/1P3Qpp/1p1k3b/3P1Rn1/1PP5/Nbn5

#2

9 + 13

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rh7
      • 2.Qxf6#
    • 1...Rh8
      • 2.Qxf6#
    • 1...Bxc2
      • 2.Sxc2#
    • 1...Sa2
      • 2.Sb3#
    • 1...Sce2
      • 2.Sb3#
    • 1...Sb3
      • 2.Sxb3#
    • 1...Sxd3
      • 2.Qxd3#
    • 1...Sf1
      • 2.Qe4#
    • 1...Sh1
      • 2.Qe4#
    • 1...Sge2
      • 2.Qe4#
    • 1...Se4+
      • 2.Qxe4#
    • 1...Sxf5+
      • 2.Sxf5#
    • 1...b3
      • 2.c3#
    • 1...cxb5
      • 2.Qd5#
    • 1...c5
      • 2.Qd5#
  • Tries
    • 1.Rxg3?
      • threat
        • 2.Qe4#
        • 2.Qf2#
      • 1...Sxd3
        • 2.Qxd3#
      • 1...Bxg3+!
    • 1.Qg4+?
      • 1...Se4+
        • 2.Qxe4#
      • 1...hxg4!
    • 1.Qe6?
      • threat
        • 2.Qc4#
        • 2.Qe3#
      • 1...Se4+
        • 2.Qxe4#
      • 1...Sf5+
        • 2.Sxf5#
      • 1...Sxd3
        • 2.Sb3#
        • 2.Rxd3#
      • 1...cxb5
        • 2.Qd5#
        • 2.Qe3#
      • 1...dxe6
        • 2.Sxe6#
      • 1...Ba2
        • 2.Qe3#
      • 1...Sf1
        • 2.Sf5#
        • 2.Qc4#
        • 2.Qe4#
      • 1...f5!
    • 1.Qf4+?
      • 1...Se4+
        • 2.Qxe4#
      • 1...gxf4!
    • 1.bxc6?
      • threat
        • 2.Qd5#
      • 1...Se4+
        • 2.Qxe4#
      • 1...Sxf5+
        • 2.Sxf5#
      • 1...dxc6
        • 2.Se6#
      • 1...Ba2!
  • Keys
    • 1.Rf1!
      • threat
        • 2.Qf2#
      • 1...Se4+
        • 2.Qxe4#
      • 1...Sxf5+
        • 2.Sxf5#
      • 1...Ke3
        • 2.Qf2#
      • 1...Bxc2
        • 2.Sxc2#
      • 1...Sxd3
        • 2.Qxd3#
      • 1...Sxf1
        • 2.Qe4#
      • 1...Sh1
        • 2.Qe4#
      • 1...Sge2
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • R(l);N_GUARD::QAB(G),XP(k)
    • B(a);XP(C)::S(A),XB(a)
    • S(b);N_GUARD::S(A)
    • S(b);N_GUARD::S(A),XS(b)
    • S(b);OGATE,XP(D)::QAR1(G),XS(b)
    • S(c);N_GUARD::QAR1(G)
    • S(c);CHECK,N_GUARD::QAR1(G),XS(c)
    • S(c);CHECK,XQ(G)::S(I),XS(c)
    • P(d);N_GUARD::P(C)
    • P(j);N_GUARD,XP(F)::QAR1(G)
    • P(j);N_GUARD::QAR1(G)
  • Tries
    • Try
      • R(E);XS(c)
      • Threat
        • DUALS(2)
      • Vars
        • S(b);OGATE,XP(D)::QAR1(G),XS(b)
      • Refutation
        • B(f);CHECK,XR(E)
    • Try
      • Q(G);CHECK
      • Vars
        • S(c);CHECK,N_GUARD,P_SPINS(c)::QAR1(G),XS(c)
      • Refutation
        • P(h);XQ(G)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);CHECK,N_GUARD::QAR1(G),XS(c)
        • S(c);CHECK,N_GUARD::S(I),XS(c)
        • P(m);XQ(G)::S(I),XP(m)
        • B(a);::QAB1(G)
      • Refutation
        • P(k);P_PINQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • S(c);CHECK,N_GUARD,P_SPINS(c)::QAR1(G),XS(c)
      • Refutation
        • P(g);XQ(G)
    • Try
      • P(F);XP(j)
      • Threat
        • QAR1(G)
      • Vars
        • S(c);CHECK,N_GUARD::QAR1(G),XS(c)
        • S(c);CHECK,XQ(G)::S(I),XS(c)
        • P(m);N_GUARD,XP(F)::S(I)
      • Refutation
        • B(a);
  • Actual
    • R(E);
    • Threat
      • QAB(G)
    • Vars
      • S(c);CHECK,N_GUARD::QAR1(G),XS(c)
      • S(c);CHECK,XQ(G)::S(I),XS(c)
      • K(e);S_FLIGHT::QAB1(G)
      • B(a);XP(C)::S(A),XB(a)
      • S(b);OGATE,XP(D)::QAR1(G),XS(b)
      • S(c);N_GUARD,XR(E)::QAR1(G)
      • S(c);N_GUARD::QAR1(G)
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