MESON Chess Problem Database
Problem Display
PID: 67977 (1b1Q4/q3PK2/3N1PPR/2p1kN2/p2Rp3/p3P3/7r/B5r1 w - - 0 1)
Kalkavouras, Ioannis
1st Prize, Best Problems, 1998-2000
#2
11 + 9
| 5406 | Selected Chess Compositions by Greek Composers | 2004 |
SOLUTION
- SOUND
- Sets
- 1...Qb6
- 2.e8Q#
- 2.e8R#
- 1...Qa5
- 2.e8Q#
- 2.e8R#
- 1...Qa6
- 2.e8Q#
- 2.e8R#
- 1...Qxe7+
- 2.Qxe7#
- 1...Qa8
- 2.e8Q#
- 2.e8R#
- 1...Rgg2
- 2.Rd2#
- 1...Rg3
- 2.Rd2#
- 1...Rg4
- 2.Rd2#
- 1...Rg5
- 2.Rd2#
- 1...Rxg6
- 2.Rd2#
- 1...Rh1
- 2.Rd1#
- 1...Rh3
- 2.Rd1#
- 1...Rh4
- 2.Rd1#
- 1...Rh5
- 2.Rd1#
- 1...Rxh6
- 2.Rd1#
- 1...Bc7
- 2.e8Q#
- 2.e8R#
- 1...Qb6
- Tries
- 1.Sg3?
- threat
- 2.Sc4#
- 1...Qxe7+
- 2.Qxe7#
- 1...Rxg3
- 2.Rd2#
- 1...Bxd6
- 2.Qxd6#
- 1...Qa6
- 2.e8Q#
- 2.e8R#
- 1...Rc2
- 2.Rh5#
- 1...c4
- 2.Sxc4#
- 1...Rc1!
- threat
- 1.Sh4?
- threat
- 2.Sc4#
- 1...Qxe7+
- 2.Qxe7#
- 1...Rxh4
- 2.Rd1#
- 1...Bxd6
- 2.Qxd6#
- 1...Qa6
- 2.e8Q#
- 2.e8R#
- 1...Rc1
- 2.Rh5#
- 1...c4
- 2.Sxc4#
- 1...Rc2!
- threat
- 1.Qd7?
- threat
- 2.Sc4#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Rxa1
- 2.Sc4#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Rxg6
- 2.Sc4#
- 2.Rd2#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Rxh6
- 2.Sc4#
- 2.Rd1#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Bxd6
- 2.Qe6#
- 1...cxd4
- 2.Sc4#
- 2.Qe6#
- 1...Rc1
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Qb6
- 2.Sc4#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Qa5
- 2.Sc4#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Qa6
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Qb7
- 2.Sc4#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Qc7
- 2.Sc4#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Qa8
- 2.Sc4#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Rb1
- 2.Sc4#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Rd1
- 2.Sc4#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Re1
- 2.Sc4#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Rf1
- 2.Sc4#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Rgh1
- 2.Sc4#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Rgg2
- 2.Sc4#
- 2.Rd2#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Rg3
- 2.Sc4#
- 2.Rd2#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Rg4
- 2.Sc4#
- 2.Rd2#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Rg5
- 2.Sc4#
- 2.Rd2#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Rhh1
- 2.Sc4#
- 2.Rd1#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Ra2
- 2.Sc4#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Rb2
- 2.Sc4#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Rc2
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Rd2
- 2.Sc4#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Re2
- 2.Sc4#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Rf2
- 2.Sc4#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Rhg2
- 2.Sc4#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Rh3
- 2.Sc4#
- 2.Rd1#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Rh4
- 2.Sc4#
- 2.Rd1#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Rh5
- 2.Sc4#
- 2.Rd1#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Bc7
- 2.Sc4#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...a2
- 2.Sc4#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...c4
- 2.Sxc4#
- 2.Qe6#
- 2.e8Q#
- 2.e8R#
- 1...Qxd7!
- threat
- 1.Qc8?
- threat
- 2.Sc4#
- 2.Qe6#
- 1...Bxd6
- 2.Qe6#
- 1...cxd4
- 2.Qe6#
- 1...Rc1
- 2.Qe6#
- 1...Qa6
- 2.Qe6#
- 2.Qxc5#
- 2.e8Q#
- 2.e8R#
- 1...Qd7
- 2.Qxc5#
- 1...Rc2
- 2.Qe6#
- 1...c4
- 2.Sxc4#
- 2.Qe6#
- 1...Qxe7+!
- threat
- 1.Sg3?
- Keys
- 1.Rh5!
- threat
- 2.Sc4#
- 1...Qxe7+
- 2.Qxe7#
- 1...Rxh5
- 2.Rd1#
- 1...Bxd6
- 2.Qxd6#
- 1...Rc1
- 2.Sh4#
- 1...Qa6
- 2.e8Q#
- 2.e8R#
- 1...Rg5
- 2.Rd2#
- 1...Rc2
- 2.Sg3#
- 1...c4
- 2.Sxc4#
- threat
- 1.Rh5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 8
- Sets
- Q(h);N_PINP(I)::P=Q
- Q(h);CHECK,OGATE,XP(I)::QAR2(K),XQ(h)
- R(a);N_GUARD::B(A)+R(C)
- R(a);N_GUARD,XP(G)::B(A)+R(C)
- R(b);N_GUARD::B(A)+R(C)
- R(b);N_GUARD,XR(H)::B(A)+R(C)
- B(i);N_PINP(I)::P=Q
- Tries
- Try
- S(D);
- Threat
- S(E)
- Vars
- Q(h);CHECK,OGATE,XP(I)::QAR2(K),XQ(h)
- R(a);N_GUARD,XS(D)::B(A)+R(C)
- B(i);OGATE,XS(E)::QAB1(K),XB(i)
- Q(h);N_PINP(I)::P=Q
- R(b);N_GUARD::R(H)
- P(f);::S(E),XP(f)
- Refutation
- R(a);
- Try
- S(D);
- Threat
- S(E)
- Vars
- Q(h);CHECK,OGATE,XP(I)::QAR2(K),XQ(h)
- R(b);N_GUARD,XS(D)::B(A)+R(C)
- B(i);OGATE,XS(E)::QAB1(K),XB(i)
- Q(h);N_PINP(I)::P=Q
- R(a);N_GUARD::R(H)
- P(f);::S(E),XP(f)
- Refutation
- R(b);
- Try
- Q(K);N_SPINP(I)
- Threat
- DUALS(4)
- Vars
- B(i);XS(E)::QAR1(K)
- Refutation
- Q(h);P_PINP(I),XQ(K)
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- B(i);XS(E)::QAR1(K)
- P(f);P_SPINP(f),XR(C)::QAR1(K)
- R(a);::QAR1(K)
- Q(h);N_GUARD::QAR2(K),XP(f)
- R(b);::QAR1(K)
- Refutation
- Q(h);CHECK,XP(I)
- Try
- Actual
- R(H);
- Threat
- S(E)
- Vars
- Q(h);CHECK,OGATE,XP(I)::QAR2(K),XQ(h)
- R(b);N_GUARD,XR(H)::B(A)+R(C)
- B(i);OGATE,XS(E)::QAB1(K),XB(i)
- R(a);N_GUARD::R(H)+S(D)
- Q(h);N_PINP(I)::P=Q
- R(a);N_GUARD::B(A)+R(C)
- R(b);N_GUARD::R(H)+S(D)
- P(f);::S(E),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).