MESON Chess Problem Database
Problem Display
PID: 274131 (8/2pN2p1/1pN1p3/1RQp4/1PP1kpK1/4p3/2P1n3/6B1 w - - 0 1)
Saferis, AM
diagrammes, 1979
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Sc1
- 2.Qd4#
- 1...Sxg1
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...f3
- 2.Qxe3#
- 1...dxc4
- 2.Qe5#
- 1...d4
- 2.Qe5#
- 1...bxc5
- 2.Sxc5#
- 1...e5
- 2.Qxd5#
- 1...g5
- 2.Sf6#
- 1...g6
- 2.Sf6#
- 1...Sc1
- Tries
- 1.Bf2?
- 1...dxc4
- 2.Qe5#
- 1...bxc5
- 2.Sxc5#
- 1...g5
- 2.Sf6#
- 1...Sc1
- 2.Qd4#
- 1...Sg1
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...f3
- 2.Qxe3#
- 1...d4
- 2.Qe5#
- 1...e5
- 2.Qxd5#
- 1...g6
- 2.Sf6#
- 1...exf2!
- 1...dxc4
- 1.Bh2?
- 1...dxc4
- 2.Qe5#
- 1...bxc5
- 2.Sxc5#
- 1...g5
- 2.Sf6#
- 1...Sc1
- 2.Qd4#
- 1...Sg1
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...d4
- 2.Qe5#
- 1...e5
- 2.Qxd5#
- 1...g6
- 2.Sf6#
- 1...f3!
- 1...dxc4
- 1.Rxb6?
- 1...Sxg1
- 2.Qd4#
- 1...dxc4
- 2.Qe5#
- 1...g5
- 2.Sf6#
- 1...Sc1
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...f3
- 2.Qxe3#
- 1...d4
- 2.Qe5#
- 1...e5
- 2.Qxd5#
- 1...g6
- 2.Sf6#
- 1...cxb6!
- 1...Sxg1
- 1.Qxb6?
- threat
- 2.Sc5#
- 1...dxc4
- 2.Re5#
- 1...cxb6!
- threat
- 1.Qd6?
- threat
- 2.Qe5#
- 2.Qxe6#
- 1...Sd4
- 2.Qxf4#
- 2.Qe5#
- 1...e5
- 2.Qxe5#
- 2.Qxd5#
- 2.Qg6#
- 1...cxd6!
- threat
- 1.Qe7?
- threat
- 2.Qxe6#
- 1...e5
- 2.Qxe5#
- 1...Sd4!
- threat
- 1.Bf2?
- Keys
- 1.Qf8!
- 1...Sxg1
- 2.Qxf4#
- 1...dxc4
- 2.Re5#
- 1...g5
- 2.Sf6#
- 1...Sc1
- 2.Qxf4#
- 1...Sc3
- 2.Qxf4#
- 1...Sg3
- 2.Qxf4#
- 1...Sd4
- 2.Qxf4#
- 1...f3
- 2.Qxf3#
- 1...d4
- 2.Re5#
- 1...e5
- 2.Qf5#
- 1...g6
- 2.Sf6#
- 1...Sxg1
- 1.Qf8!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 9
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- S(a);N_GUARD::QAR1(G)
- S(a);N_GUARD,XB(A)::QAR1(G)
- S(a);N_GUARD::QAR1(G),XS(a)
- P(d);N_GUARD::QAR1(G),XP(b)
- P(e);OGATE,XP(D)::QAR1(G)
- P(e);OGATE::QAR1(G)
- P(f);XQ(G)::S(I),XP(f)
- P(g);N_GUARD::QAB1(G),XP(e)
- P(i);N_GUARD::S(I)
- Tries
- Try
- B(A);
- Vars
- P(e);OGATE,XP(D)::QAR1(G)
- P(f);XQ(G)::S(I),XP(f)
- P(i);N_GUARD::S(I)
- S(a);N_GUARD::QAR1(G)
- S(a);N_GUARD::QAR1(G),XS(a)
- P(d);N_GUARD::QAR1(G),XP(b)
- P(e);OGATE::QAR1(G)
- P(g);N_GUARD::QAB1(G),XP(e)
- Refutation
- P(b);XB(A)
- Try
- B(A);
- Vars
- P(e);OGATE,XP(D)::QAR1(G)
- P(f);XQ(G)::S(I),XP(f)
- P(i);N_GUARD::S(I)
- S(a);N_GUARD::QAR1(G)
- S(a);N_GUARD::QAR1(G),XS(a)
- P(e);OGATE::QAR1(G)
- P(g);N_GUARD::QAB1(G),XP(e)
- Refutation
- P(d);
- Try
- R(F);XP(f)
- Vars
- S(a);N_GUARD,XB(A)::QAR1(G)
- P(e);OGATE,XP(D)::QAR1(G)
- P(i);N_GUARD::S(I)
- S(a);N_GUARD::QAR1(G)
- S(a);N_GUARD::QAR1(G),XS(a)
- P(d);N_GUARD::QAR1(G),XP(b)
- P(e);OGATE::QAR1(G)
- P(g);N_GUARD::QAB1(G),XP(e)
- Refutation
- P(h);XR(F)
- Try
- Q(G);XP(f)
- Threat
- S(I)
- Vars
- P(e);OGATE,XP(D)::R1(F)
- Refutation
- P(h);XQ(G)
- Try
- Q(G);
- Threat
- DUALS(2)
- Refutation
- P(h);XQ(G)
- Try
- Q(G);P_PINP(g)
- Threat
- QAR2(G),XP(g)
- Vars
- P(g);OGATE::QAR1(G),XP(g)
- Refutation
- S(a);
- Try
- Actual
- Q(G);
- Vars
- S(a);N_GUARD,XB(A)::QAR1(G),XP(d)
- P(e);OGATE,XP(D)::R1(F)
- P(i);N_GUARD::S(I)
- S(a);N_GUARD::QAR1(G),XP(d)
- P(d);OGATE::QAB1(G),XP(d)
- P(e);OGATE::R1(F)
- P(g);N_GUARD::QAB1(G)
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).