MESON Chess Problem Database
Problem Display
PID: 55849 (4n3/3PPr2/R1Q1p1B1/1K1Nk2N/2p2q2/2PR1p1b/3B4/8 w - - 0 1)
le Grand, Henk
1st HM., Probleemblad, 2004
#2
11 + 8
| 102 | Probleemblad | 2007 |
SOLUTION
- SOUND
- Sets
- 1...Qh2
- 2.Re3#
- 1...Qe3
- 2.Rxe3#
- 1...Qg3
- 2.Re3#
- 1...Qd4
- 2.cxd4#
- 1...Qf6
- 2.Re3#
- 1...Rf5
- 2.Qxe6#
- 1...Rxe7
- 2.Bxf4#
- 1...Rg7
- 2.Bxf4#
- 1...Rh7
- 2.Bxf4#
- 1...Bf1
- 2.Qxe6#
- 1...Bg2
- 2.Qxe6#
- 1...Sd6+
- 2.Qxd6#
- 1...Sf6
- 2.Bxf4#
- 2.Qd6#
- 2.Qc7#
- 1...Sc7+
- 2.Qxc7#
- 1...Sg7
- 2.Qd6#
- 2.Qc7#
- 1...exd5
- 2.Rxd5#
- 2.Qxd5#
- 1...Qh2
- Tries
- 1.Se3?
- threat
- 2.Qc5#
- 1...Sd6+
- 2.Qxd6#
- 1...Sc7+
- 2.Qxc7#
- 1...Qxe3
- 2.Rxe3#
- 1...Qd4
- 2.cxd4#
- 1...Qe4
- 2.Qxe4#
- 1...Qf5
- 2.Sxc4#
- 1...Rf5
- 2.Qxe6#
- 1...Sf6
- 2.Qd6#
- 2.Qc7#
- 1...Bf5!
- threat
- 1.Sb4?
- threat
- 2.Qc5#
- 1...Sd6+
- 2.Qxd6#
- 1...Sc7+
- 2.Qxc7#
- 1...Qe3
- 2.Rxe3#
- 1...Qd4
- 2.cxd4#
- 1...Qe4
- 2.Qxe4#
- 1...Rf5
- 2.Qxe6#
- 1...Bf5
- 2.Bxf4#
- 1...Sf6
- 2.Bxf4#
- 2.Qd6#
- 2.Qc7#
- 1...Qf5!
- threat
- 1.Sdxf4?
- threat
- 2.Re3#
- 2.Qe4#
- 2.Qc5#
- 1...Sd6+
- 2.Qxd6#
- 1...Sc7+
- 2.Qxc7#
- 1...Rxf4
- 2.Bxf4#
- 2.Qc5#
- 1...cxd3
- 2.Sxd3#
- 2.Qe4#
- 2.Qc5#
- 1...Rf5
- 2.Re3#
- 2.Qxe6#
- 1...Sf6
- 2.Qd6#
- 2.Qc7#
- 1...Bf5!
- threat
- 1.Sb6?
- threat
- 2.Qc5#
- 1...Sd6+
- 2.Qxd6#
- 1...Sc7+
- 2.Qxc7#
- 1...Bf5
- 2.Bxf4#
- 1...Qe3
- 2.Sxc4#
- 2.Rxe3#
- 1...Qd4
- 2.cxd4#
- 1...Qe4
- 2.Qxe4#
- 1...Qf5
- 2.Sxc4#
- 1...Sf6
- 2.Bxf4#
- 2.Qd6#
- 2.Qc7#
- 1...Rf5!
- threat
- 1.Sc7?
- threat
- 2.Qc5#
- 1...Sd6+
- 2.Qxd6#
- 1...Sxc7+
- 2.Qxc7#
- 1...Bf5
- 2.Bxf4#
- 1...Qe3
- 2.Rxe3#
- 1...Qd4
- 2.cxd4#
- 1...Qe4
- 2.Qxe4#
- 1...Rf5
- 2.Qxe6#
- 1...Sf6
- 2.Bxf4#
- 2.Qd6#
- 1...Qf5!
- threat
- 1.Shxf4?
- threat
- 2.Re3#
- 1...Sd6+
- 2.Qxd6#
- 1...Sc7+
- 2.Qxc7#
- 1...Rxf4
- 2.Bxf4#
- 1...cxd3
- 2.Sxd3#
- 1...exd5
- 2.Rxd5#
- 2.Qxd5#
- 1...Sf6
- 2.Qd6#
- 2.Qc7#
- 1...Bf5!
- threat
- 1.Re3+?
- 1...Qe4
- 2.Rxe4#
- 1...Qxe3!
- 1...Qe4
- 1.Qc5?
- threat
- 2.Se3#
- 2.Sb4#
- 2.Sdxf4#
- 2.Sb6#
- 2.Sdf6#
- 2.Sc7#
- 1...Sd6+
- 2.Qxd6#
- 1...Sc7+
- 2.Sxc7#
- 2.Qxc7#
- 1...Qxd2
- 2.Se3#
- 2.Sb4#
- 2.Sdf4#
- 2.Sb6#
- 2.Sdf6#
- 2.Sc7#
- 2.Qd4#
- 1...exd5
- 2.Rxd5#
- 2.Qxd5#
- 1...Qf5
- 2.Sdf6#
- 2.Qd4#
- 1...Rf5
- 2.Sdf6#
- 1...Bf5
- 2.Sdf6#
- 1...Qh2
- 2.Se3#
- 2.Sb4#
- 2.Sdf4#
- 2.Sb6#
- 2.Sdf6#
- 2.Sc7#
- 2.Re3#
- 2.Qe3#
- 2.Qd4#
- 1...Qe3
- 2.Sxe3#
- 2.Rxe3#
- 2.Qxe3#
- 1...Qg3
- 2.Se3#
- 2.Sb4#
- 2.Sdf4#
- 2.Sb6#
- 2.Sdf6#
- 2.Sc7#
- 2.Re3#
- 2.Qe3#
- 2.Qd4#
- 1...Qg5
- 2.Se3#
- 2.Sb4#
- 2.Sdf4#
- 2.Sb6#
- 2.Sdf6#
- 2.Sc7#
- 2.Qd4#
- 1...Qh6
- 2.Se3#
- 2.Sb4#
- 2.Sdf4#
- 2.Sb6#
- 2.Sdf6#
- 2.Sc7#
- 2.Qd4#
- 1...Qd4
- 2.Qxd4#
- 2.cxd4#
- 1...Qg4
- 2.Se3#
- 2.Sb4#
- 2.Sdf4#
- 2.Sb6#
- 2.Sdf6#
- 2.Sc7#
- 1...Qh4
- 2.Se3#
- 2.Sb4#
- 2.Sdf4#
- 2.Sb6#
- 2.Sdf6#
- 2.Sc7#
- 1...Qf6
- 2.Se3#
- 2.Sb4#
- 2.Sdf4#
- 2.Sb6#
- 2.Sdxf6#
- 2.Sc7#
- 2.Re3#
- 2.Qe3#
- 2.Qd4#
- 1...Rf6
- 2.Se3#
- 2.Sb4#
- 2.Sdxf4#
- 2.Sb6#
- 2.Sdxf6#
- 2.Sc7#
- 1...Sf6
- 2.Sdxf6#
- 2.Bxf4#
- 2.Qd6#
- 2.Qc7#
- 1...Qe4!
- threat
- 1.Qc7+?
- 1...Sd6+
- 2.Qxd6#
- 1...Sxc7+!
- 1...Sd6+
- 1.Se3?
- Keys
- 1.Sdf6!
- threat
- 2.Bxf4#
- 2.Qc5#
- 1...Sd6+
- 2.Qxd6#
- 1...Sc7+
- 2.Qxc7#
- 1...Qxd2
- 2.Qe4#
- 2.Qc5#
- 1...Qxf6
- 2.Re3#
- 2.Qe4#
- 2.Qc5#
- 1...Rxf6
- 2.Qc5#
- 1...Sxf6
- 2.Bxf4#
- 2.Qd6#
- 2.Qc7#
- 1...Qh2
- 2.Re3#
- 2.Qe4#
- 2.Qc5#
- 1...Qe3
- 2.Rxe3#
- 1...Qg3
- 2.Re3#
- 2.Qe4#
- 2.Qc5#
- 1...Qg5
- 2.Qe4#
- 2.Qc5#
- 1...Qh6
- 2.Qe4#
- 2.Qc5#
- 1...Qd4
- 2.cxd4#
- 1...Qe4
- 2.Qxe4#
- 1...Qg4
- 2.Qc5#
- 1...Qh4
- 2.Qc5#
- 1...Qf5
- 2.Qc5#
- threat
- 1.Sdf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 9
- Sets
- Q(d);N_GUARD::R(C)
- Q(d);N_GUARD::R(C),XQ(d)
- Q(d);OGATE::P(B),XQ(d)
- R(g);S_CUTB(b)::QAR1(H),XP(f)
- R(g);N_GUARD,XP(K)::B(A),XQ(d)
- R(g);N_GUARD::B(A),XQ(d)
- B(b);N_GUARD::QAR1(H),XP(f)
- S(h);CHECK,N_GUARD::QAB1(H),XS(h)
- S(h);CHECK,N_GUARD::QAB(H),XS(h)
- Tries
- Try
- S(E);
- Threat
- QAR2(H)
- Vars
- S(h);CHECK,N_GUARD::QAB1(H),XS(h)
- S(h);CHECK,N_GUARD::QAB(H),XS(h)
- Q(d);OGATE,XS(E)::R(C),XQ(d)
- Q(d);OGATE::P(B),XQ(d)
- Q(d);N_GUARD::QAR1(H),XQ(d)
- Q(d);N_GUARD::S(E),XP(c)
- R(g);S_CUTB(b)::QAR1(H),XP(f)
- Refutation
- B(b);
- Try
- S(E);
- Threat
- QAR2(H)
- Vars
- S(h);CHECK,N_GUARD::QAB1(H),XS(h)
- S(h);CHECK,N_GUARD::QAB(H),XS(h)
- Q(d);N_GUARD::R(C),XQ(d)
- Q(d);OGATE::P(B),XQ(d)
- Q(d);N_GUARD::QAR1(H),XQ(d)
- R(g);S_CUTB(b)::QAR1(H),XP(f)
- B(b);S_CUTR(g)::B(A),XQ(d)
- Refutation
- Q(d);
- Try
- S(E);XQ(d)
- Threat
- DUALS(3)
- Vars
- S(h);CHECK,N_GUARD::QAB1(H),XS(h)
- S(h);CHECK,N_GUARD::QAB(H),XS(h)
- Refutation
- B(b);
- Try
- S(E);
- Threat
- QAR2(H)
- Vars
- S(h);CHECK,N_GUARD::QAB1(H),XS(h)
- S(h);CHECK,N_GUARD::QAB(H),XS(h)
- B(b);S_CUTR(g)::B(A),XQ(d)
- Q(d);OGATE::P(B),XQ(d)
- Q(d);N_GUARD::QAR1(H),XQ(d)
- Q(d);N_GUARD::S(E),XP(c)
- Refutation
- R(g);
- Try
- S(E);
- Threat
- QAR2(H)
- Vars
- S(h);CHECK,N_GUARD::QAB1(H),XS(h)
- S(h);CHECK,OGATE,XS(E)::QAB(H),XS(h)
- B(b);S_CUTR(g)::B(A),XQ(d)
- Q(d);N_GUARD::R(C),XQ(d)
- Q(d);OGATE::P(B),XQ(d)
- Q(d);N_GUARD::QAR1(H),XQ(d)
- R(g);S_CUTB(b)::QAR1(H),XP(f)
- Refutation
- Q(d);
- Try
- S(F);XQ(d)
- Threat
- R(C)
- Vars
- S(h);CHECK,N_GUARD::QAB1(H),XS(h)
- S(h);CHECK,N_GUARD::QAB(H),XS(h)
- R(g);OGATE,XS(F)::B(A),XR(g)
- P(c);XR(C)::S(F),XP(c)
- Refutation
- B(b);
- Try
- R(C);CHECK
- Vars
- Q(d);N_GUARD,P_SPINQ(d)::R1(C),XQ(d)
- Refutation
- Q(d);XR(C)
- Try
- Q(H);
- Threat
- DUALS(6)
- Vars
- S(h);CHECK,N_GUARD::QAB1(H),XS(h)
- R(g);::QAR(H)+S(E)
- B(b);::QAR(H)+S(E)
- Refutation
- Q(d);
- Try
- Q(H);CHECK
- Vars
- S(h);CHECK,N_GUARD,P_SPINS(h)::QAB1(H),XS(h)
- Refutation
- S(h);CHECK,XQ(H)
- Try
- Actual
- S(E);
- Threat
- DUALS(2)
- Vars
- S(h);CHECK,N_GUARD::QAB1(H),XS(h)
- S(h);CHECK,N_GUARD::QAB(H),XS(h)
- R(g);XS(E)::QAR2(H)
- Q(d);N_GUARD::R(C),XQ(d)
- Q(d);OGATE::P(B),XQ(d)
- Q(d);N_GUARD::QAR1(H),XQ(d)
- Q(d);::QAR2(H)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).