MESON Chess Problem Database
Problem Display
PID: 110653 (1B1KnN1Q/1Prp2r1/p2k3b/P4Rp1/2p1BpN1/2P2P2/8/8 w - - 0 1)
Kovacs, Ferenc
3rd Prize, Hietzing, 1930
#2
11 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rg6
- 2.Qd4#
- 2.Qe5#
- 1...Re7
- 2.Qd4#
- 1...Rf7
- 2.Qd4#
- 2.Qe5#
- 1...Rh7
- 2.Qd4#
- 2.Qe5#
- 1...Rg8
- 2.Qd4#
- 2.Qe5#
- 1...Sf6
- 2.Bxc7#
- 1...Rg6
- Tries
- 1.Kxe8?
- 1...Rg6
- 2.Qd4#
- 2.Qe5#
- 1...Rf7
- 2.Qd4#
- 2.Qe5#
- 1...Rh7
- 2.Qd4#
- 2.Qe5#
- 2.Qf6#
- 1...Rg8
- 2.Qd4#
- 2.Qe5#
- 2.Qf6#
- 1...Re7+!
- 1...Rg6
- 1.Sf2?
- 1...Rg6
- 2.Qd4#
- 2.Qe5#
- 1...Re7
- 2.Qd4#
- 1...Rf7
- 2.Qd4#
- 2.Qe5#
- 1...Rh7
- 2.Qd4#
- 2.Qe5#
- 1...Rg8
- 2.Qd4#
- 2.Qe5#
- 1...Sf6
- 2.Bxc7#
- 1...g4!
- 1...Rg6
- 1.Sh2?
- 1...Rg6
- 2.Qd4#
- 2.Qe5#
- 1...Re7
- 2.Qd4#
- 1...Rf7
- 2.Qd4#
- 2.Qe5#
- 1...Rh7
- 2.Qd4#
- 2.Qe5#
- 1...Rg8
- 2.Qd4#
- 2.Qe5#
- 1...Sf6
- 2.Bxc7#
- 1...g4!
- 1...Rg6
- 1.Sf6?
- threat
- 2.Sxe8#
- 1...Sxf6
- 2.Bxc7#
- 1...Re7!
- threat
- 1.Sxh6?
- 1...Rg6
- 2.Sf7#
- 2.Qd4#
- 2.Qe5#
- 1...Re7
- 2.Qd4#
- 1...Rf7
- 2.Sxf7#
- 2.Qd4#
- 2.Qe5#
- 1...Rh7
- 2.Qd4#
- 2.Qe5#
- 1...Rg8
- 2.Sf7#
- 2.Qd4#
- 2.Qe5#
- 1...Sf6
- 2.Bxc7#
- 1...g4!
- 1...Rg6
- 1.Rb5?
- 1...Rg6
- 2.Qd4#
- 2.Qe5#
- 1...Re7
- 2.Qd4#
- 1...Rf7
- 2.Qd4#
- 2.Qe5#
- 1...Rh7
- 2.Qd4#
- 2.Qe5#
- 1...Rg8
- 2.Qd4#
- 2.Qe5#
- 1...Sf6
- 2.Bxc7#
- 1...axb5!
- 1...Rg6
- 1.Qxg7?
- threat
- 2.Qd4#
- 2.Qe5#
- 2.Qxd7#
- 2.Qe7#
- 1...Sxg7
- 2.Bxc7#
- 1...Sf6
- 2.Bxc7#
- 2.Qxf6#
- 2.Qe7#
- 1...Bxg7!
- threat
- 1.Qxh6+?
- 1...Sf6
- 2.Bxc7#
- 2.Qxf6#
- 1...Rg6!
- 1...Sf6
- 1.Kxe8?
- Keys
- 1.Ba7!
- 1...Rc8+
- 2.bxc8S#
- 1...Rxb7
- 2.Bc5#
- 1...Rc5
- 2.Bxc5#
- 1...Rc6
- 2.Rd5#
- 1...Rg6
- 2.Qd4#
- 2.Qe5#
- 1...Re7
- 2.Qd4#
- 1...Rf7
- 2.Qd4#
- 2.Qe5#
- 1...Rh7
- 2.Qd4#
- 2.Qe5#
- 1...Rg8
- 2.Qd4#
- 2.Qe5#
- 1...Sf6
- 2.Rxf6#
- 1...Rc8+
- 1.Ba7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- R(i);OGATE::QAR2(K)
- S(j);N_GUARD::B(H),XR(g)
- Tries
- Try
- K(I);P-FLIGHT,XS(j)
- Refutation
- R(i);CHECK
- Try
- S(D);
- Vars
- R(i);OGATE::QAR2(K)
- S(j);N_GUARD::B(H),XR(g)
- Refutation
- P(c);
- Try
- S(D);
- Vars
- R(i);OGATE::QAR2(K)
- S(j);N_GUARD::B(H),XR(g)
- Refutation
- P(c);
- Try
- S(D);
- Threat
- S(D),XS(j)
- Vars
- S(j);N_GUARD,XS(D)::B(H),XR(g)
- Refutation
- R(i);
- Try
- S(D);XB(f)
- Vars
- R(i);OGATE::QAR2(K)
- S(j);N_GUARD::B(H),XR(g)
- Refutation
- P(c);
- Try
- R(F);
- Vars
- R(i);OGATE::QAR2(K)
- S(j);N_GUARD::B(H),XR(g)
- Refutation
- P(d);XR(F)
- Try
- Q(K);XR(i)
- Threat
- DUALS(4)
- Vars
- S(j);N_GUARD,XQ(K)::B(H),XR(g)
- Refutation
- B(f);XQ(K)
- Try
- Q(K);CHECK,XB(f)
- Refutation
- R(i);N_SPINR(g),P_SPINR(i)
- Try
- Actual
- B(H);N_PINR(g)
- Vars
- R(g);CHECK,OGATE::PXR(g)=S
- R(g);N_GUARD,XP(G)::B(H)
- R(g);N_GUARD::B(H),XR(g)
- R(g);SBLOCK::R1(F)
- R(i);OGATE::QAR2(K)
- S(j);N_GUARD::R(F),XS(j)
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).