MESON Chess Problem Database
Problem Display
PID: 3037 (3b4/pK3p2/Np1B4/rp1kP3/rRN3QR/p7/P5n1/8 w - - 0 1)
Gevers, Raymond
Chess Amateur (The), 1917
#2
9 + 10
| 2681 | All Change Here! | 1919 |
| 5110 | Bekroonde Problemen | 2002 |
SOLUTION
- SOUND
- Sets
- 1...Rxb4
- 2.Sxb4#
- 1...Rxa6
- 2.Rxb5#
- 1...Bxh4
- 2.Sc7#
- 1...Bg5
- 2.Sc7#
- 1...Bf6
- 2.Sc7#
- 1...Bc7
- 2.Sxc7#
- 1...Be7
- 2.Sc7#
- 1...Se1
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sf4
- 2.Se3#
- 1...Sxh4
- 2.Se3#
- 1...bxc4
- 2.Qxc4#
- 1...f5
- 2.Qg8#
- 1...f6
- 2.Qg8#
- 1...Rxb4
- Tries
- 1.Sxa5?
- threat
- 2.Rxb5#
- 1...Rxb4
- 2.Sxb4#
- 1...Rxa5
- 2.Rd4#
- 1...f5
- 2.Qg8#
- 1...Sf4!
- threat
- 1.Sc5?
- threat
- 2.Qd1#
- 2.Qf3#
- 2.Qxg2#
- 2.Qd4#
- 2.Qe4#
- 1...Bxh4
- 2.Qd1#
- 2.Qe4#
- 1...Sxh4
- 2.Se3#
- 2.Qd1#
- 2.Qe4#
- 1...Sf4
- 2.Se3#
- 1...Se1
- 2.Se3#
- 2.Qd4#
- 2.Qe4#
- 1...Bg5
- 2.Qf3#
- 2.Qxg2#
- 2.Qd4#
- 2.Qe4#
- 1...Se3
- 2.Sxe3#
- 2.Qf3#
- 2.Qd4#
- 2.Qe4#
- 1...f5
- 2.Qd1#
- 2.Qf3#
- 2.Qxg2#
- 2.Qd4#
- 2.Qg8#
- 1...bxc5!
- threat
- 1.Rh1?
- threat
- 2.Rd1#
- 1...Sf4
- 2.Se3#
- 1...Se1
- 2.Se3#
- 1...Bg5
- 2.Sc7#
- 1...Se3
- 2.Sxe3#
- 1...f5!
- threat
- 1.Rh3?
- threat
- 2.Rd3#
- 1...bxc4
- 2.Qxc4#
- 1...Sf4
- 2.Se3#
- 1...Se1
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...f5!
- threat
- 1.Qf5?
- threat
- 2.Qxf7#
- 2.e6#
- 1...Sxh4
- 2.Se3#
- 1...bxc4
- 2.Qxf7#
- 1...Sf4
- 2.Se3#
- 1...f6
- 2.exf6#
- 2.e6#
- 1...Bf6
- 2.Sc7#
- 2.exf6#
- 1...Se3
- 2.Sxe3#
- 2.Qxf7#
- 1...Bxh4!
- threat
- 1.Qd7?
- threat
- 2.Bc5#
- 2.Bc7#
- 2.Be7#
- 2.Bb8#
- 2.Bf8#
- 2.Qxf7#
- 1...Rxa6
- 2.Be7#
- 2.Bf8#
- 2.Rxb5#
- 2.Qxf7#
- 1...Sxh4
- 2.Se3#
- 1...bxc4
- 2.Bc7#
- 2.Bb8#
- 2.Qxf7#
- 1...Sf4
- 2.Se3#
- 1...f6
- 2.Bc5#
- 2.Bc7#
- 2.Be7#
- 2.Bb8#
- 2.Bf8#
- 2.Qf7#
- 1...Bc7
- 2.Sxc7#
- 2.Bxc7#
- 2.Qxf7#
- 1...Be7
- 2.Sc7#
- 2.Bxe7#
- 1...f5
- 2.Bc5#
- 2.Bc7#
- 2.Be7#
- 2.Bb8#
- 2.Bf8#
- 2.Qf7#
- 1...Bxh4!
- threat
- 1.Sxa5?
- Keys
- 1.Rh5!
- 1...Rxb4
- 2.Sxb4#
- 1...Rxa6
- 2.Rxb5#
- 1...bxc4
- 2.Qxc4#
- 1...Sf4
- 2.Se3#
- 1...f5
- 2.exf5 ep#
- 1...Se1
- 2.Se3#
- 1...Bh4
- 2.Sc7#
- 1...Bg5
- 2.Sc7#
- 1...Bf6
- 2.Sc7#
- 2.exf6#
- 1...Bc7
- 2.Sxc7#
- 1...Be7
- 2.Sc7#
- 1...Se3
- 2.Sxe3#
- 1...Sh4
- 2.Se3#
- 1...f6
- 2.exf6#
- 1...Rxb4
- 1.Rh5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- R(c);XR(B)::S(G),XR(c)
- R(d);N_GUARD,XS(G)::R(B),XP(e)
- B(j);N_GUARD,XR(E)::S(G)
- B(j);N_GUARD::S(G)
- B(j);N_GUARD::S(G),XB(j)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- S(a);N_GUARD,XR(E)::S(C)
- P(e);OGATE,XS(C)::QAB1(D),XP(e)
- P(i);OGATEB::QAB(D)
- Tries
- Try
- S(C);XR(d)
- Threat
- R(B),XP(e)
- Vars
- R(c);XR(B)::S(G),XR(c)
- R(c);N_GUARD,XS(C)::R1(B)
- P(i);OGATEB::QAB(D)
- Refutation
- S(a);
- Try
- S(G);
- Threat
- DUALS(5)
- Vars
- S(a);N_GUARD::S(C)
- Refutation
- P(g);XS(G)
- Try
- R(E);
- Threat
- R(E)
- Vars
- S(a);N_GUARD::S(C)
- B(j);N_GUARD::S(G)
- S(a);N_GUARD::S(C),XS(a)
- Refutation
- P(i);
- Try
- R(E);
- Threat
- R(E)
- Vars
- P(e);OGATE,XS(C)::QAB1(D),XP(e)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- Refutation
- P(i);
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- S(a);N_GUARD,XR(E)::S(C)
- P(e);XS(C)::QAB(D),XP(i)
- S(a);N_GUARD::S(C)
- Refutation
- B(j);XR(E)
- Try
- Q(D);
- Threat
- DUALS(6)
- Vars
- S(a);N_GUARD,XR(E)::S(C)
- S(a);N_GUARD::S(C)
- Refutation
- B(j);XR(E)
- Try
- Actual
- R(E);
- Vars
- R(c);XR(B)::S(G),XR(c)
- R(d);N_GUARD,XS(G)::R(B),XP(e)
- P(e);OGATE,XS(C)::QAB1(D),XP(e)
- S(a);N_GUARD::S(C)
- P(i);OGATE::R(E)+P(F),XP(i),EP
- B(j);N_GUARD::S(G)
- B(j);N_GUARD::S(G),XB(j)
- S(a);N_GUARD::S(C),XS(a)
- P(i);OGATE::R(E)+P(F),XP(i)
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).