MESON Chess Problem Database
Problem Display
PID: 15267 (7r/p4bP1/Kp1P4/1R3Qn1/pPkB4/1p6/PP1R4/5q1r w - - 0 1)
Petkov, Petko Andonov
10th Place, 02. WCCT, 1980-1983
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Qg2
- 2.Qd3#
- 1...Qd3
- 2.Qxd3#
- 1...Qa1
- 2.Qd3#
- 1...Qc1
- 2.Qd3#
- 1...Qd1
- 2.Qd3#
- 1...Qe1
- 2.Qd3#
- 1...Qg1
- 2.Qd3#
- 1...Qf2
- 2.Qd3#
- 1...Qf4
- 2.Qd3#
- 1...R1h4
- 2.Qxf1#
- 1...R1h5
- 2.Qxf1#
- 1...R1h6
- 2.Qxf1#
- 1...R1h7
- 2.Qxf1#
- 1...Rh2
- 2.Qc8#
- 1...Rh3
- 2.Qc8#
- 1...R8h4
- 2.Qc8#
- 1...R8h5
- 2.Qc8#
- 1...R8h6
- 2.Qc8#
- 1...R8h7
- 2.Qc8#
- 1...Rc8
- 2.Qxc8#
- 1...Bd5
- 2.Qxd5#
- 1...Bh5
- 2.Qd5#
- 1...Bg6
- 2.Qd5#
- 1...Be8
- 2.Qd5#
- 1...Bg8
- 2.Qc8#
- 1...Sf3
- 2.Qxf7#
- 1...Se6
- 2.Qd5#
- 1...bxa2
- 2.Qc2#
- 1...Qg2
- Tries
- 1.Bg1?
- threat
- 2.Rd4#
- 2.Qxf1#
- 1...Qxg1
- 2.Qd3#
- 1...Qxf5
- 2.Rd4#
- 1...bxa2
- 2.Qc2#
- 1...Qe2
- 2.Rd4#
- 1...Qg2
- 2.Rd4#
- 2.Qd3#
- 1...Qd3
- 2.Qxd3#
- 1...Qh3
- 2.Rd4#
- 1...Qa1
- 2.Rd4#
- 2.Qd3#
- 1...Qb1
- 2.Rd4#
- 1...Qc1
- 2.Rd4#
- 2.Qd3#
- 1...Qd1
- 2.Qd3#
- 1...Qe1
- 2.Rd4#
- 2.Qd3#
- 1...Qf2
- 2.Qd3#
- 1...Qf3
- 2.Rd4#
- 1...Qf4
- 2.Qd3#
- 1...R1h2
- 2.Rd4#
- 1...R1h3
- 2.Rd4#
- 1...R1h4
- 2.Qxf1#
- 1...R8h2
- 2.Rd4#
- 2.Qc8#
- 1...R8h3
- 2.Rd4#
- 2.Qc8#
- 1...R8h4
- 2.Qc8#
- 2.Qxf1#
- 1...Re8
- 2.Rd4#
- 1...Bh5
- 2.Rd4#
- 2.Qd5#
- 1...Bg6
- 2.Rd4#
- 2.Qd5#
- 1...Sf3
- 2.Qxf7#
- 1...Se6
- 2.Qxf1#
- 2.Qd5#
- 1...Rxg1!
- threat
- 1.Bf2?
- threat
- 2.Rd4#
- 1...Qxf2
- 2.Qd3#
- 1...bxa2
- 2.Qc2#
- 1...Qd3
- 2.Qxd3#
- 1...Qd1
- 2.Qd3#
- 1...R8h4
- 2.Qc8#
- 1...Sf3
- 2.Qxf7#
- 1...Se6
- 2.Qd5#
- 1...R1h4!
- threat
- 1.Bc3?
- threat
- 2.Rd4#
- 1...Qd3
- 2.Qxd3#
- 1...Qd1
- 2.Qd3#
- 1...Qg1
- 2.Qd3#
- 1...Qf2
- 2.Qd3#
- 1...Qf4
- 2.Qd3#
- 1...R1h4
- 2.Qxf1#
- 1...R8h4
- 2.Qc8#
- 1...Sf3
- 2.Qxf7#
- 1...Se6
- 2.Qd5#
- 1...bxa2!
- threat
- 1.Bc5?
- threat
- 2.Rd4#
- 1...bxa2
- 2.Qc2#
- 1...bxc5
- 2.Qxc5#
- 1...Qd3
- 2.Qxd3#
- 1...Qd1
- 2.Qd3#
- 1...Qg1
- 2.Qd3#
- 1...Qf2
- 2.Qd3#
- 1...Qf4
- 2.Qd3#
- 1...R1h4
- 2.Qxf1#
- 1...Sf3
- 2.Qxf7#
- 1...Se6
- 2.Qd5#
- 1...R8h4!
- threat
- 1.Be5?
- threat
- 2.Rd4#
- 1...bxa2
- 2.Qc2#
- 1...Qd3
- 2.Qxd3#
- 1...Qd1
- 2.Qd3#
- 1...Qg1
- 2.Qd3#
- 1...Qf2
- 2.Qd3#
- 1...Qf4
- 2.Qd3#
- 1...R1h4
- 2.Qxf1#
- 1...R8h4
- 2.Qc8#
- 1...Sf3
- 2.Qxf7#
- 1...Se6!
- threat
- 1.Bxb6?
- threat
- 2.Rd4#
- 2.Qc5#
- 1...Qxf5
- 2.Rd4#
- 1...bxa2
- 2.Qc2#
- 1...Qd3
- 2.Qxd3#
- 2.Qc5#
- 1...Qd1
- 2.Qd3#
- 2.Qc5#
- 1...Qg1
- 2.Qd3#
- 1...Qf2
- 2.Qd3#
- 1...Qf4
- 2.Qd3#
- 2.Qc5#
- 1...R1h4
- 2.Qxf1#
- 2.Qc5#
- 1...R8h4
- 2.Qc8#
- 2.Qc5#
- 1...Rc8
- 2.Rd4#
- 2.Qxc8#
- 1...Bd5
- 2.Rd4#
- 2.Qxd5#
- 1...Sf3
- 2.Qc5#
- 2.Qxf7#
- 1...Se4
- 2.Rd4#
- 2.Qxe4#
- 1...Se6
- 2.Qd5#
- 1...axb6!
- threat
- 1.Bf6?
- threat
- 2.Rd4#
- 1...bxa2
- 2.Qc2#
- 1...Qd3
- 2.Qxd3#
- 1...Qd1
- 2.Qd3#
- 1...Qg1
- 2.Qd3#
- 1...Qf2
- 2.Qd3#
- 1...Qf4
- 2.Qd3#
- 1...R1h4
- 2.Qxf1#
- 1...R8h4
- 2.Qc8#
- 1...Se6
- 2.Qd5#
- 1...Sf3!
- threat
- 1.Rc5+?
- 1...bxc5
- 2.Qxc5#
- 1...Kxb4+!
- 1...bxc5
- 1.Bg1?
- Keys
- 1.Be3!
- threat
- 2.Rd4#
- 1...bxa2
- 2.Qc2#
- 1...Qd3
- 2.Qxd3#
- 1...Qd1
- 2.Qd3#
- 1...Qf4
- 2.Qd3#
- 1...R1h4
- 2.Qxf1#
- 1...R8h4
- 2.Qc8#
- 1...Sf3
- 2.Qxf7#
- 1...Se6
- 2.Qd5#
- threat
- 1.Be3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 20
- Sets
- Q(a);N_GUARD::QAB1(G)
- Q(a);N_GUARD::QAB1(G),XQ(a)
- R(b);N_GUARD::QAB(G),XQ(a)
- R(j);N_GUARD::QAR(G)
- R(j);N_GUARD::QAR(G),XR(j)
- B(i);N_GUARD::QAB1(G),XB(i)
- B(i);N_GUARD::QAB1(G)
- B(i);S_CUTR(j)::QAR(G)
- S(f);N_GUARD,S_CUTQ(a)::QAB(G),XB(i)
- S(f);S_CUTB(i)::QAB1(G)
- P(c);N_GUARD,XP(A)::QAR2(G)
- Tries
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD,XB(E)::QAB1(G)
- Q(a);XQ(G)::R1(C)
- P(c);N_GUARD,XP(A)::QAR2(G)
- Q(a);::R1(C)
- Q(a);N_GUARD::QAB1(G),XQ(a)
- Q(a);N_GUARD::QAB1(G)
- R(b);::R1(C)
- R(b);::QAB(G),XQ(a)
- R(j);::R1(C)
- S(f);N_GUARD,S_CUTQ(a)::QAB(G),XB(i)
- Refutation
- R(b);XB(E)
- Try
- B(E);
- Threat
- R1(C)
- Vars
- Q(a);N_GUARD,XB(E)::QAB1(G)
- P(c);N_GUARD,XP(A)::QAR2(G)
- Q(a);N_GUARD::QAB1(G),XQ(a)
- Q(a);N_GUARD::QAB1(G)
- R(j);N_GUARD::QAR(G)
- S(f);N_GUARD::QAB(G),XB(i)
- S(f);S_CUTB(i)::QAB1(G)
- Refutation
- R(b);
- Try
- B(E);
- Threat
- R1(C)
- Vars
- Q(a);N_GUARD::QAB1(G),XQ(a)
- Q(a);N_GUARD::QAB1(G)
- R(b);N_GUARD::QAB(G),XQ(a)
- R(j);N_GUARD::QAR(G)
- S(f);N_GUARD,S_CUTQ(a)::QAB(G),XB(i)
- S(f);S_CUTB(i)::QAB1(G)
- Refutation
- P(c);XP(A)
- Try
- B(E);
- Threat
- R1(C)
- Vars
- P(c);N_GUARD,XP(A)::QAR2(G)
- P(g);OGATE,XB(E)::QAR1(G),XP(g)
- Q(a);N_GUARD::QAB1(G),XQ(a)
- Q(a);N_GUARD::QAB1(G)
- R(b);N_GUARD::QAB(G),XQ(a)
- S(f);N_GUARD,S_CUTQ(a)::QAB(G),XB(i)
- S(f);S_CUTB(i)::QAB1(G)
- Refutation
- R(j);
- Try
- B(E);
- Threat
- R1(C)
- Vars
- P(c);N_GUARD,XP(A)::QAR2(G)
- Q(a);N_GUARD::QAB1(G),XQ(a)
- Q(a);N_GUARD::QAB1(G)
- R(b);N_GUARD::QAB(G),XQ(a)
- R(j);N_GUARD::QAR(G)
- S(f);N_GUARD,S_CUTQ(a)::QAB(G),XB(i)
- Refutation
- S(f);
- Try
- B(E);XP(g)
- Threat
- DUALS(2)
- Vars
- Q(a);XQ(G)::R1(C)
- P(c);N_GUARD,XP(A)::QAR2(G)
- Q(a);N_GUARD::QAB1(G)
- S(f);S_CUTB(i)::QAB1(G)
- Refutation
- P(h);XB(E)
- Try
- B(E);
- Threat
- R1(C)
- Vars
- P(c);N_GUARD,XP(A)::QAR2(G)
- Q(a);N_GUARD::QAB1(G),XQ(a)
- Q(a);N_GUARD::QAB1(G)
- R(b);N_GUARD::QAB(G),XQ(a)
- R(j);N_GUARD::QAR(G)
- S(f);S_CUTB(i)::QAB1(G)
- Refutation
- S(f);
- Try
- R(F);CHECK
- Vars
- P(g);OGATE,XR(F)::QAR1(G),XP(g)
- Refutation
- K(e);CHECK,P-FLIGHT,XP(D)
- Try
- Actual
- B(E);
- Threat
- R1(C)
- Vars
- P(c);N_GUARD,XP(A)::QAR2(G)
- Q(a);N_GUARD::QAB1(G),XQ(a)
- Q(a);N_GUARD::QAB1(G)
- R(b);N_GUARD::QAB(G),XQ(a)
- R(j);N_GUARD::QAR(G)
- S(f);N_GUARD,S_CUTQ(a)::QAB(G),XB(i)
- S(f);S_CUTB(i)::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).