MESON Chess Problem Database
Problem Display
PID: 60911 (8/1Q3bRr/3k4/3P2r1/q1pR3B/3NN1P1/2p2K2/8 w - - 0 1)
Dyachuk, Vasyl Vasilovich
Liberte-Dimanche, 2000
#2
9 + 7
SOLUTION
- SOUND
- Sets
- 1...Qe8
- 2.Sxc4#
- 1...Qa1
- 2.Sxc4#
- 1...Qa3
- 2.Sxc4#
- 1...Qa5
- 2.Sxc4#
- 1...Qa7
- 2.Sxc4#
- 1...Qa8
- 2.Sxc4#
- 1...Rxg3
- 2.Sf5#
- 2.Bxg3#
- 2.Be7#
- 2.Qe7#
- 1...Rg4
- 2.Sf5#
- 2.Be7#
- 2.Qe7#
- 1...Rf5+
- 2.Sxf5#
- 1...Rgh5
- 2.Be7#
- 2.Qe7#
- 1...Rg6
- 2.Sf5#
- 2.Be7#
- 2.Qe7#
- 1...Rgxg7
- 2.Sf5#
- 2.Be7#
- 2.Qe7#
- 1...Bh5
- 2.Qc7#
- 2.Qe7#
- 2.Qb8#
- 1...Be6
- 2.Qc7#
- 2.Qe7#
- 2.Qb8#
- 1...Bg6
- 2.Qc7#
- 2.Qe7#
- 2.Qb8#
- 1...Be8
- 2.Qc7#
- 2.Qe7#
- 2.Qb8#
- 1...Bg8
- 2.Qc7#
- 2.Qe7#
- 2.Qb8#
- 1...Qe8
- Tries
- 1.Bxg5?
- threat
- 2.Sf5#
- 2.Bf4#
- 2.Be7#
- 2.Qe7#
- 1...Bxd5
- 2.Rg6#
- 2.Qxd5#
- 1...cxd3
- 2.Qe7#
- 1...Qd7
- 2.Sxc4#
- 1...Qe8
- 2.Sxc4#
- 2.Sf5#
- 1...Qa7
- 2.Sxc4#
- 2.Sf5#
- 2.Bf4#
- 2.Be7#
- 2.Qc6#
- 1...Rh4
- 2.Sf5#
- 2.Be7#
- 2.Qe7#
- 1...Rh5
- 2.Sf5#
- 2.Be7#
- 2.Qe7#
- 1...Be6
- 2.Bf4#
- 2.Be7#
- 2.Qc7#
- 2.Qe7#
- 2.Qb8#
- 1...Bg6
- 2.Bf4#
- 2.Be7#
- 2.Rxg6#
- 2.Qc7#
- 2.Qe7#
- 2.Qb8#
- 1...Rh2+!
- threat
- 1.Re4?
- threat
- 2.Qe7#
- 1...Rf5+
- 2.Sxf5#
- 1...Rxd5
- 2.Be7#
- 1...Bxd5
- 2.Qc7#
- 1...Qd7
- 2.Sxc4#
- 1...Qe8
- 2.Sxc4#
- 1...Qa7
- 2.Qc6#
- 1...Re5!
- threat
- 1.Rg6+?
- 1...Rxg6
- 2.Sf5#
- 2.Be7#
- 2.Qe7#
- 1...Be6
- 2.Rxe6#
- 1...Bxg6!
- 1...Rxg6
- 1.Rxf7?
- threat
- 2.Rf6#
- 2.Qc7#
- 2.Qe7#
- 2.Qb8#
- 1...Rf5+
- 2.Sxf5#
- 1...Rxd5
- 2.Rf6#
- 2.Qxd5#
- 1...cxd3
- 2.Qc7#
- 2.Qe7#
- 1...Qb3
- 2.Rf6#
- 2.Qc6#
- 2.Qc7#
- 2.Qd7#
- 2.Qe7#
- 1...Qb5
- 2.Rf6#
- 2.Qc7#
- 2.Qe7#
- 1...Qc6
- 2.Rf6#
- 2.Qxc6#
- 2.Qe7#
- 1...Qd7
- 2.Sxc4#
- 2.Qxd7#
- 1...Qe8
- 2.Sxc4#
- 2.Qb4#
- 2.Qc7#
- 1...Qb4
- 2.Rf6#
- 2.Qc6#
- 2.Qxb4#
- 2.Qc7#
- 2.Qd7#
- 2.Qe7#
- 1...Qa5
- 2.Sxc4#
- 2.Rf6#
- 2.Qc6#
- 2.Qd7#
- 2.Qe7#
- 1...Qa7
- 2.Sxc4#
- 2.Rf6#
- 2.Qc6#
- 1...Qa8
- 2.Sxc4#
- 2.Rf6#
- 2.Qb4#
- 2.Qc7#
- 2.Qd7#
- 2.Qe7#
- 1...Re5
- 2.Qc7#
- 2.Qb8#
- 1...Rg6
- 2.Sf5#
- 2.Be7#
- 2.Qc7#
- 2.Qe7#
- 2.Qb8#
- 1...Rg8
- 2.Sf5#
- 2.Be7#
- 2.Rf6#
- 2.Qc7#
- 2.Qe7#
- 1...Rh6
- 2.Qc7#
- 2.Qe7#
- 2.Qb8#
- 1...Rh8
- 2.Rf6#
- 2.Qc7#
- 2.Qe7#
- 1...Rxf7+!
- threat
- 1.Qxf7?
- threat
- 2.Qe6#
- 2.Qf6#
- 2.Qc7#
- 2.Qe7#
- 2.Qf8#
- 1...Rf5+
- 2.Sxf5#
- 1...Rxd5
- 2.Rg6#
- 2.Qxd5#
- 2.Qg6#
- 2.Qf6#
- 1...Rgxg7
- 2.Sf5#
- 1...cxd3
- 2.Qc7#
- 2.Qe7#
- 1...Qd7
- 2.Qxd7#
- 1...Qc6
- 2.Qe6#
- 2.Qf6#
- 2.Qe7#
- 2.Qf8#
- 1...Qe8
- 2.Sxc4#
- 2.Qc7#
- 1...Qa5
- 2.Sxc4#
- 2.Qe6#
- 2.Qf6#
- 2.Qd7#
- 2.Qe7#
- 2.Qf8#
- 1...Qa7
- 2.Sxc4#
- 2.Qe6#
- 2.Qf6#
- 1...Qa8
- 2.Sxc4#
- 2.Qe6#
- 2.Qf6#
- 2.Qc7#
- 2.Qd7#
- 2.Qe7#
- 1...Re5
- 2.Qc7#
- 1...Rg6
- 2.Sf5#
- 2.Rxg6#
- 2.Qxg6#
- 2.Qf4#
- 2.Qc7#
- 2.Qe7#
- 2.Qf8#
- 1...Rh6
- 2.Qc7#
- 2.Qe7#
- 2.Qf8#
- 1...Rh8
- 2.Qe6#
- 2.Qf6#
- 2.Qc7#
- 2.Qe7#
- 1...Rhxg7!
- threat
- 1.Bxg5?
- Keys
- 1.Rxc4!
- threat
- 2.Qc7#
- 1...Rf5+
- 2.Sxf5#
- 1...Qxc4
- 2.Sxc4#
- 1...Rxd5
- 2.Qe7#
- 1...Bxd5
- 2.Qe7#
- 1...Qd7
- 2.Qb4#
- 1...Qc6
- 2.Rxc6#
- 1...Qa5
- 2.Rc6#
- 1...Qa7
- 2.Rc6#
- threat
- 1.Rxc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 5
- REMOVED MATES = 4
- Sets
- Q(b);N_GUARD::S(C),XP(c)
- R(d);CHECK,N_GUARD::S(C),XR(d)
- Tries
- Try
- B(F);XR(d)
- Threat
- DUALS(4)
- Vars
- P(c);XS(B)::QAB1(H)
- Q(b);N_GUARD::S(C),XP(c)
- Refutation
- R(g);CHECK
- Try
- R(E);
- Threat
- QAB1(H)
- Vars
- R(d);CHECK,N_GUARD::S(C),XR(d)
- R(d);OGATE,XP(G)::B(F)
- B(f);XP(G)::QAB1(H)
- Q(b);N_GUARD::S(C),XP(c)
- Q(b);N_GUARD,P_PINS(C)::QAR1(H)
- Refutation
- R(d);
- Try
- R(I);CHECK
- Vars
- B(f);N_GUARD,P_SPINB(f)::R1(I),XB(f)
- Refutation
- B(f);XR(I)
- Try
- R(I);XB(f)
- Threat
- DUALS(4)
- Vars
- R(d);CHECK,N_GUARD::S(C),XR(d)
- Refutation
- R(g);CHECK,XR(I)
- Try
- Q(H);XB(f)
- Threat
- DUALS(5)
- Vars
- R(d);CHECK,N_GUARD::S(C),XR(d)
- R(d);N_GUARD,XR(I)::S(C)
- Q(b);N_GUARD::QAR1(H),XQ(b)
- R(d);::QAB1(H)
- Refutation
- R(g);XR(I)
- Try
- Actual
- R(E);XP(c)
- Threat
- QAB1(H)
- Vars
- R(d);CHECK,N_GUARD::S(C),XR(d)
- Q(b);XR(E)::S(C),XQ(b)
- R(d);XP(G)::QAB1(H)
- B(f);XP(G)::QAB1(H)
- Q(b);N_GUARD,SBLOCK::QAB(H)
- Q(b);N_GUARD::R1(E),XQ(b)
- Q(b);N_GUARD::R1(E)
- Q(b);N_GUARD,P_PINS(C)::R1(E)
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).