MESON Chess Problem Database
Problem Display
PID: 69838 (1b6/3Q1p1K/BPrn1B1p/5RpN/1pP1k3/2p3R1/4r3/4nN2 w - - 0 1)
Navon, Emanuel
6th Place, League of Macedonian Problemists, 2002-2003
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.Re3#
- 1...Rb2
- 2.Re3#
- 1...Rc2
- 2.Re3#
- 1...Rd2
- 2.Re3#
- 1...Rf2
- 2.Re3#
- 1...Rg2
- 2.Re3#
- 1...Rh2
- 2.Re3#
- 1...Re3
- 2.Rxe3#
- 1...Sxc4
- 2.Qd5#
- 1...Sb5
- 2.Qd5#
- 1...Sxf5
- 2.Qxc6#
- 2.Qd5#
- 1...Sb7
- 2.Qd5#
- 1...Sc8
- 2.Qd5#
- 1...Se8
- 2.Qd5#
- 1...g4
- 2.Rf4#
- 1...Ra2
- Tries
- 1.Bb7?
- threat
- 2.Bxc6#
- 1...Sxb7
- 2.Qd5#
- 1...Re3
- 2.Rxe3#
- 1...Rd2
- 2.Re3#
- 1...Sf3!
- threat
- 1.Be5?
- threat
- 2.Sf6#
- 1...Sxc4
- 2.Rg4#
- 1...Sxf5
- 2.Qd5#
- 1...Re3
- 2.Rxe3#
- 1...Sb5
- 2.Rg4#
- 1...Sb7
- 2.Rg4#
- 1...Sc8
- 2.Rg4#
- 1...Se8
- 2.Rg4#
- 1...f6
- 2.Sxf6#
- 1...Sf3!
- threat
- 1.Rxc3?
- threat
- 2.Sfg3#
- 2.Shg3#
- 1...Sxc4
- 2.Qd5#
- 1...Sxf5
- 2.Qxc6#
- 2.Qd5#
- 1...Rg2
- 2.Re3#
- 1...Re3
- 2.Sd2#
- 2.Rxe3#
- 1...Sd3
- 2.Shg3#
- 1...Sb5
- 2.Qd5#
- 1...Sb7
- 2.Qd5#
- 1...Sc8
- 2.Qd5#
- 1...Se8
- 2.Qd5#
- 1...bxc3!
- threat
- 1.Rgf3?
- threat
- 2.Sfg3#
- 2.Shg3#
- 2.Qxc6#
- 2.Qe7#
- 1...Rxc4
- 2.Sfg3#
- 2.Shg3#
- 2.Qe7#
- 1...Rxb6
- 2.Sfg3#
- 2.Shg3#
- 2.Qe7#
- 1...Sxc4
- 2.Qxc6#
- 2.Qd4#
- 2.Qd5#
- 1...Sxf5
- 2.Qxf5#
- 2.Qxc6#
- 2.Qd5#
- 1...Re3
- 2.Rxe3#
- 1...Rd2
- 2.Sfg3#
- 2.Shg3#
- 2.Re3#
- 2.Qe7#
- 1...Rg2
- 2.Re3#
- 2.Qxc6#
- 2.Qe7#
- 1...Rc5
- 2.Sfg3#
- 2.Shg3#
- 1...Rc7
- 2.Sfg3#
- 2.Shg3#
- 1...Rc8
- 2.Sfg3#
- 2.Shg3#
- 2.Qe7#
- 1...Sd3
- 2.Sfg3#
- 2.Shg3#
- 2.Qxc6#
- 1...Sb5
- 2.Qxc6#
- 2.Qd5#
- 1...Sb7
- 2.Qxc6#
- 2.Qd4#
- 2.Qd5#
- 1...Sc8
- 2.Qxc6#
- 2.Qd4#
- 2.Qd5#
- 1...Se8
- 2.Qxc6#
- 2.Qd4#
- 2.Qd5#
- 1...Sxf3!
- threat
- 1.Ra5?
- threat
- 2.Qg4#
- 2.Qxc6#
- 2.Qe7#
- 1...Rxc4
- 2.Qg4#
- 2.Qe7#
- 1...Rxb6
- 2.Qg4#
- 2.Qe7#
- 1...Sxc4
- 2.Qf5#
- 2.Qxc6#
- 2.Qd4#
- 2.Qd5#
- 1...Re3
- 2.Rxe3#
- 1...Rd2
- 2.Re3#
- 2.Qg4#
- 2.Qe7#
- 1...Rf2
- 2.Re3#
- 2.Qxc6#
- 2.Qe7#
- 1...Rc5
- 2.Qg4#
- 1...Rc7
- 2.Qg4#
- 1...Rc8
- 2.Qg4#
- 2.Qe7#
- 1...Sg2
- 2.Qxc6#
- 2.Qe7#
- 1...Sd3
- 2.Qxc6#
- 1...Sb5
- 2.Qd5#
- 1...Sf5
- 2.Qxf5#
- 2.Qxc6#
- 2.Qd5#
- 1...Sb7
- 2.Qf5#
- 2.Qxc6#
- 2.Qd4#
- 2.Qd5#
- 1...Sc8
- 2.Qf5#
- 2.Qxc6#
- 2.Qd4#
- 2.Qd5#
- 1...Se8
- 2.Qf5#
- 2.Qxc6#
- 2.Qd4#
- 2.Qd5#
- 1...g4
- 2.Qxg4#
- 2.Qxc6#
- 2.Qe7#
- 1...Sf3!
- threat
- 1.Rb5?
- threat
- 2.Qg4#
- 2.Qxc6#
- 2.Qe7#
- 1...Rxc4
- 2.Qg4#
- 2.Qe7#
- 1...Rxb6
- 2.Qg4#
- 2.Qe7#
- 1...Sxc4
- 2.Qf5#
- 2.Qxc6#
- 2.Qd4#
- 2.Qd5#
- 1...Sxb5
- 2.Qd5#
- 1...Re3
- 2.Rxe3#
- 1...Rd2
- 2.Re3#
- 2.Qg4#
- 2.Qe7#
- 1...Rf2
- 2.Re3#
- 2.Qxc6#
- 2.Qe7#
- 1...Rc5
- 2.Qg4#
- 1...Rc7
- 2.Qg4#
- 1...Rc8
- 2.Qg4#
- 2.Qe7#
- 1...Sg2
- 2.Qxc6#
- 2.Qe7#
- 1...Sd3
- 2.Qxc6#
- 1...Sf5
- 2.Qxf5#
- 2.Qxc6#
- 2.Qd5#
- 1...Sb7
- 2.Qf5#
- 2.Qxc6#
- 2.Qd4#
- 2.Qd5#
- 1...Sc8
- 2.Qf5#
- 2.Qxc6#
- 2.Qd4#
- 2.Qd5#
- 1...Se8
- 2.Qf5#
- 2.Qxc6#
- 2.Qd4#
- 2.Qd5#
- 1...g4
- 2.Qxg4#
- 2.Qxc6#
- 2.Qe7#
- 1...Sf3!
- threat
- 1.Rc5?
- threat
- 2.Qg4#
- 2.Qxc6#
- 2.Qe7#
- 1...Rxc5
- 2.Qg4#
- 1...Rxb6
- 2.Qg4#
- 2.Qe7#
- 1...Sxc4
- 2.Qf5#
- 2.Qxc6#
- 2.Qd4#
- 2.Qd5#
- 1...Re3
- 2.Rxe3#
- 1...Rd2
- 2.Re3#
- 2.Qg4#
- 2.Qe7#
- 1...Rf2
- 2.Re3#
- 2.Qxc6#
- 2.Qe7#
- 1...Rc7
- 2.Qg4#
- 1...Rc8
- 2.Qg4#
- 2.Qe7#
- 1...Sg2
- 2.Qxc6#
- 2.Qe7#
- 1...Sd3
- 2.Qxc6#
- 1...Sb5
- 2.Qf5#
- 2.Qxc6#
- 2.Qd5#
- 1...Sf5
- 2.Qxf5#
- 2.Qxc6#
- 2.Qd5#
- 1...Sb7
- 2.Qf5#
- 2.Qxc6#
- 2.Qd4#
- 2.Qd5#
- 1...Sc8
- 2.Qf5#
- 2.Qxc6#
- 2.Qd4#
- 2.Qd5#
- 1...Se8
- 2.Qf5#
- 2.Qxc6#
- 2.Qd4#
- 2.Qd5#
- 1...g4
- 2.Qxg4#
- 2.Qxc6#
- 2.Qe7#
- 1...Sf3!
- threat
- 1.Rd5?
- threat
- 2.Rd4#
- 2.Qg4#
- 2.Qe7#
- 1...Sxc4
- 2.Rd4#
- 2.Qf5#
- 1...Rd2
- 2.Re3#
- 2.Qg4#
- 2.Qe7#
- 1...Rf2
- 2.Re3#
- 2.Rd4#
- 2.Qe7#
- 1...Rc7
- 2.Rd4#
- 2.Qg4#
- 1...Sc2
- 2.Qg4#
- 2.Qe7#
- 1...Sg2
- 2.Rd4#
- 2.Qe7#
- 1...Sd3
- 2.Rd4#
- 1...Sf3
- 2.Rg4#
- 2.Qg4#
- 1...Sb5
- 2.Qf5#
- 1...Sf5
- 2.Qxf5#
- 1...Sb7
- 2.Rd4#
- 2.Qf5#
- 1...Sc8
- 2.Rd4#
- 2.Qf5#
- 1...Se8
- 2.Rd4#
- 2.Qf5#
- 1...g4
- 2.Rd4#
- 2.Qxg4#
- 2.Qe7#
- 1...Rxc4!
- threat
- 1.Rfxg5?
- threat
- 2.R5g4#
- 2.Qg4#
- 2.Qxc6#
- 2.Qe7#
- 1...Rxc4
- 2.Qg4#
- 2.Qe7#
- 1...Rxb6
- 2.R5g4#
- 2.Qg4#
- 2.Qe7#
- 1...Sxc4
- 2.Qf5#
- 2.Qxc6#
- 2.Qd4#
- 2.Qd5#
- 1...hxg5
- 2.Qg4#
- 1...Re3
- 2.Rxe3#
- 1...Rd2
- 2.Re3#
- 2.R5g4#
- 2.Qg4#
- 2.Qe7#
- 1...Rf2
- 2.Re3#
- 2.Qxc6#
- 2.Qe7#
- 1...Rc5
- 2.R5g4#
- 2.Qg4#
- 1...Rc7
- 2.R5g4#
- 2.Qg4#
- 1...Rc8
- 2.R5g4#
- 2.Qg4#
- 2.Qe7#
- 1...Sg2
- 2.Qxc6#
- 2.Qe7#
- 1...Sd3
- 2.Qxc6#
- 1...Sb5
- 2.Qf5#
- 2.Qxc6#
- 2.Qd5#
- 1...Sf5
- 2.Qxf5#
- 2.Qxc6#
- 2.Qd5#
- 1...Sb7
- 2.Qf5#
- 2.Qxc6#
- 2.Qd4#
- 2.Qd5#
- 1...Sc8
- 2.Qf5#
- 2.Qxc6#
- 2.Qd4#
- 2.Qd5#
- 1...Se8
- 2.Qf5#
- 2.Qxc6#
- 2.Qd4#
- 2.Qd5#
- 1...Sf3!
- threat
- 1.Bb7?
- Keys
- 1.c5!
- threat
- 2.Rg4#
- 1...Sxf5
- 2.Qxc6#
- 1...Rf2
- 2.Re3#
- 1...Rg2
- 2.Re3#
- 1...Sg2
- 2.Bd3#
- 1...Sd3
- 2.Bxd3#
- 1...Sc4
- 2.Qd5#
- 1...Sb5
- 2.Qd5#
- 1...Sb7
- 2.Qd5#
- 1...Sc8
- 2.Qd5#
- 1...Se8
- 2.Qd5#
- 1...g4
- 2.Rxg4#
- threat
- 1.c5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 6
- Sets
- R(b);N_GUARD::R1(B)
- R(b);N_GUARD::R1(B),XR(b)
- S(h);OGATE,XP(C)::QAB1(I)
- S(h);OGATE::QAB1(I)
- P(f);N_GUARD::R1(D)
- Tries
- Try
- B(F);P_PINR(g)
- Threat
- B(F),XR(g)
- Vars
- S(h);N_SPINR(g),OGATE,XB(F)::QAB1(I)
- R(b);N_GUARD::R1(B),XR(b)
- R(b);N_GUARD::R1(B)
- Refutation
- S(a);
- Try
- B(H);
- Threat
- S(E)
- Vars
- S(h);XP(C)::R(B)
- S(h);OGATE,SBLOCK,XR(D)::QAB1(I)
- R(b);N_GUARD::R1(B),XR(b)
- S(h);::R(B)
- P(j);::S(E),XP(j)
- Refutation
- S(a);
- Try
- R(B);XP(c)
- Threat
- DUALS(2)
- Vars
- S(h);OGATE,XP(C)::QAB1(I)
- R(b);N_GUARD::R1(B)
- S(a);::S(E)
- S(h);OGATE::QAB1(I)
- Refutation
- P(d);XR(B)
- Try
- R(B);
- Threat
- DUALS(4)
- Vars
- R(b);N_GUARD::R1(B),XR(b)
- Refutation
- S(a);XR(B)
- Try
- R(D);
- Threat
- DUALS(3)
- Vars
- R(b);N_GUARD::R1(B),XR(b)
- R(g);::QAR2(I)
- S(a);::QAB(I),XR(g)
- S(h);OGATE::QAB1(I)
- Refutation
- S(a);
- Try
- R(D);
- Threat
- DUALS(3)
- Vars
- S(h);OGATE,XR(D)::QAB1(I)
- R(b);N_GUARD::R1(B),XR(b)
- R(g);::QAR2(I)
- S(a);::QAB(I),XR(g)
- Refutation
- S(a);
- Try
- R(D);
- Threat
- DUALS(3)
- Vars
- R(g);XR(D)::QAR2(I)
- R(b);N_GUARD::R1(B),XR(b)
- R(g);::QAR2(I)
- S(a);::QAB(I),XR(g)
- Refutation
- S(a);
- Try
- R(D);
- Threat
- DUALS(3)
- Vars
- S(a);::R1(D)
- S(h);N_GUARD::QAB1(I)
- S(h);N_GUARD::QAB1(I),XS(h)
- Refutation
- R(g);XP(C)
- Try
- R(D);XP(f)
- Threat
- DUALS(4)
- Vars
- P(i);XR(D)::QAR2(I)
- R(b);N_GUARD::R1(B),XR(b)
- S(a);::QAB(I),XR(g)
- Refutation
- S(a);
- Try
- Actual
- P(C);
- Threat
- R(B)
- Vars
- S(h);SBLOCK,XR(D)::QAB(I),XR(g)
- R(b);N_GUARD::R1(B)
- S(a);N_GUARD::B(F)
- S(a);N_GUARD::B(F),XS(a)
- S(h);OGATE::QAB1(I)
- P(f);::R(B),XP(f)
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).