MESON Chess Problem Database
Problem Display
PID: 227578 (5nq1/3p3b/3P4/KN3p2/4pk1P/p1B1N3/P7/3BQ2n w - - 0 1)
Kotrc, Jan
64 Shakhmatnoe obozrenie, 1926
#2
9 + 9
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qb3
- 2.Sg2#
- 1...Qc4
- 2.Sg2#
- 1...Qd5
- 2.Sg2#
- 2.Sxd5#
- 1...Qe6
- 2.Sg2#
- 1...Qf7
- 2.Sg2#
- 1...Qg1
- 2.Sd5#
- 1...Qg2
- 2.Sxg2#
- 2.Sd5#
- 1...Qg3
- 2.Sd5#
- 1...Qg4
- 2.Sd5#
- 1...Qg5
- 2.Sd5#
- 1...Qg6
- 2.Sd5#
- 1...Qg7
- 2.Sd5#
- 1...Qh8
- 2.Sg2#
- 2.Sd5#
- 1...Bg6
- 2.Sg2#
- 1...Sf2
- 2.Qxf2#
- 1...Sg3
- 2.Sg2#
- 2.Qf2#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sg2#
- 1...Qb3
- Tries
- 1.Ka6?
- 1...Sf2
- 2.Qxf2#
- 1...Qb3
- 2.Sg2#
- 1...Qc4
- 2.Sg2#
- 1...Qd5
- 2.Sg2#
- 2.Sxd5#
- 1...Qe6
- 2.Sg2#
- 1...Qf7
- 2.Sg2#
- 1...Qg1
- 2.Sd5#
- 1...Qg2
- 2.Sxg2#
- 2.Sd5#
- 1...Qg3
- 2.Sd5#
- 1...Qg4
- 2.Sd5#
- 1...Qg5
- 2.Sd5#
- 1...Qg6
- 2.Sd5#
- 1...Qg7
- 2.Sd5#
- 1...Qh8
- 2.Sg2#
- 2.Sd5#
- 1...Bg6
- 2.Sg2#
- 1...Sg3
- 2.Sg2#
- 2.Qf2#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sg2#
- 1...Qxa2!
- 1...Sf2
- 1.Sc4?
- threat
- 2.Be5#
- 2.Qe3#
- 1...e3
- 2.Qxe3#
- 1...Qg1
- 2.Be5#
- 1...Qd5
- 2.Qe3#
- 1...Qe6
- 2.Qe3#
- 1...Qg3
- 2.Be5#
- 1...Qg7
- 2.Qe3#
- 1...Qh8
- 2.Qe3#
- 1...Sg6
- 2.Qe3#
- 1...Qxc4!
- threat
- 1.Sxa3?
- 1...Qd5+
- 2.Sxd5#
- 1...Sf2
- 2.Qxf2#
- 1...Qg1
- 2.Sd5#
- 1...Qb3
- 2.Sg2#
- 1...Qc4
- 2.Sg2#
- 1...Qe6
- 2.Sg2#
- 1...Qf7
- 2.Sg2#
- 1...Qg2
- 2.Sxg2#
- 2.Sd5#
- 1...Qg3
- 2.Sd5#
- 1...Qg4
- 2.Sd5#
- 1...Qg5
- 2.Sd5#
- 1...Qg6
- 2.Sd5#
- 1...Qg7
- 2.Sd5#
- 1...Qh8
- 2.Sg2#
- 2.Sd5#
- 1...Bg6
- 2.Sg2#
- 1...Sg3
- 2.Sg2#
- 2.Qf2#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sg2#
- 1...Qxa2!
- 1...Qd5+
- 1.Sa7?
- 1...Qd5+
- 2.Sxd5#
- 1...Sf2
- 2.Qxf2#
- 1...Qg1
- 2.Sd5#
- 1...Qb3
- 2.Sg2#
- 1...Qc4
- 2.Sg2#
- 1...Qe6
- 2.Sg2#
- 1...Qf7
- 2.Sg2#
- 1...Qg2
- 2.Sxg2#
- 2.Sd5#
- 1...Qg3
- 2.Sd5#
- 1...Qg4
- 2.Sd5#
- 1...Qg5
- 2.Sd5#
- 1...Qg6
- 2.Sd5#
- 1...Qg7
- 2.Sd5#
- 1...Qh8
- 2.Sg2#
- 2.Sd5#
- 1...Bg6
- 2.Sg2#
- 1...Sg3
- 2.Sg2#
- 2.Qf2#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sg2#
- 1...Qxa2!
- 1...Qd5+
- 1.Sc7?
- 1...Qd5+
- 2.Sexd5#
- 2.Scxd5#
- 1...Sf2
- 2.Qxf2#
- 1...Qg1
- 2.Sed5#
- 2.Scd5#
- 1...Qb3
- 2.Sg2#
- 1...Qc4
- 2.Sg2#
- 1...Qe6
- 2.Sg2#
- 1...Qf7
- 2.Sg2#
- 1...Qg2
- 2.Sxg2#
- 2.Sed5#
- 2.Scd5#
- 1...Qg3
- 2.Sed5#
- 2.Scd5#
- 1...Qg4
- 2.Sed5#
- 2.Scd5#
- 1...Qg5
- 2.Sed5#
- 2.Scd5#
- 1...Qg6
- 2.Sed5#
- 2.Scd5#
- 1...Qg7
- 2.Sed5#
- 2.Scd5#
- 1...Qh8
- 2.Sg2#
- 2.Sed5#
- 2.Scd5#
- 1...Bg6
- 2.Sg2#
- 1...Sg3
- 2.Sg2#
- 2.Qf2#
- 1...Se6
- 2.Sed5#
- 2.Scd5#
- 1...Sg6
- 2.Sg2#
- 1...Qxa2!
- 1...Qd5+
- 1.Ba1?
- 1...Sf2
- 2.Qxf2#
- 1...Qg1
- 2.Sd5#
- 1...Qb3
- 2.Sg2#
- 1...Qc4
- 2.Sg2#
- 1...Qd5
- 2.Sg2#
- 2.Sxd5#
- 1...Qe6
- 2.Sg2#
- 1...Qf7
- 2.Sg2#
- 1...Qg2
- 2.Sxg2#
- 2.Sd5#
- 1...Qg3
- 2.Sd5#
- 1...Qg4
- 2.Sd5#
- 1...Qg5
- 2.Sd5#
- 1...Qg6
- 2.Sd5#
- 1...Qg7
- 2.Sd5#
- 1...Qh8
- 2.Sg2#
- 2.Sd5#
- 1...Bg6
- 2.Sg2#
- 1...Sg3
- 2.Sg2#
- 2.Qf2#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sg2#
- 1...Qxa2!
- 1...Sf2
- 1.Bb2?
- 1...Qxa2
- 2.Sg2#
- 1...Sf2
- 2.Qxf2#
- 1...Qg1
- 2.Sd5#
- 1...Qb3
- 2.Sg2#
- 1...Qc4
- 2.Sg2#
- 1...Qd5
- 2.Sg2#
- 2.Sxd5#
- 1...Qe6
- 2.Sg2#
- 1...Qf7
- 2.Sg2#
- 1...Qg2
- 2.Sxg2#
- 2.Sd5#
- 1...Qg3
- 2.Sd5#
- 1...Qg4
- 2.Sd5#
- 1...Qg5
- 2.Sd5#
- 1...Qg6
- 2.Sd5#
- 1...Qg7
- 2.Sd5#
- 1...Qh8
- 2.Sg2#
- 2.Sd5#
- 1...Bg6
- 2.Sg2#
- 1...Sg3
- 2.Sg2#
- 2.Qf2#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sg2#
- 1...axb2!
- 1...Qxa2
- 1.Bd4?
- 1...Sf2
- 2.Qxf2#
- 1...Qg1
- 2.Sd5#
- 1...Qb3
- 2.Sg2#
- 1...Qc4
- 2.Sg2#
- 1...Qd5
- 2.Sg2#
- 2.Sxd5#
- 1...Qe6
- 2.Sg2#
- 1...Qf7
- 2.Sg2#
- 1...Qg2
- 2.Sxg2#
- 2.Sd5#
- 1...Qg3
- 2.Sd5#
- 1...Qg4
- 2.Sd5#
- 1...Qg5
- 2.Sd5#
- 1...Qg6
- 2.Sd5#
- 1...Qg7
- 2.Sd5#
- 1...Qh8
- 2.Sg2#
- 2.Sd5#
- 1...Bg6
- 2.Sg2#
- 1...Sg3
- 2.Sg2#
- 2.Qf2#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sg2#
- 1...Qxa2!
- 1...Sf2
- 1.Bf6?
- 1...Sf2
- 2.Qxf2#
- 1...Qg1
- 2.Sd5#
- 1...Qb3
- 2.Sg2#
- 1...Qc4
- 2.Sg2#
- 1...Qd5
- 2.Sg2#
- 2.Sxd5#
- 1...Qe6
- 2.Sg2#
- 1...Qf7
- 2.Sg2#
- 1...Qg2
- 2.Sxg2#
- 2.Sd5#
- 1...Qg3
- 2.Sd5#
- 1...Qg4
- 2.Sd5#
- 1...Qg5
- 2.Sd5#
- 1...Qg6
- 2.Sd5#
- 1...Qg7
- 2.Sd5#
- 1...Qh8
- 2.Sg2#
- 2.Sd5#
- 1...Bg6
- 2.Sg2#
- 1...Sg3
- 2.Sg2#
- 2.Qf2#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sg2#
- 1...Qxa2!
- 1...Sf2
- 1.Qg3+?
- 1...Qxg3
- 2.Sd5#
- 1...Sxg3
- 2.Sg2#
- 1...Kxg3!
- 1...Qxg3
- 1.Ka6?
- Keys
- 1.Be2!
- 1...Kxe3
- 2.Bd2#
- 1...Qxa2
- 2.Sg2#
- 1...Sf2
- 2.Qxf2#
- 1...Qg1
- 2.Sd5#
- 1...Qb3
- 2.Sg2#
- 1...Qc4
- 2.Sg2#
- 1...Qd5
- 2.Sg2#
- 2.Sxd5#
- 1...Qe6
- 2.Sg2#
- 1...Qf7
- 2.Sg2#
- 1...Qg2
- 2.Sxg2#
- 2.Sd5#
- 1...Qg3
- 2.Sd5#
- 1...Qg4
- 2.Sd5#
- 1...Qg5
- 2.Sd5#
- 1...Qg6
- 2.Sd5#
- 1...Qg7
- 2.Sd5#
- 1...Qh8
- 2.Sg2#
- 2.Sd5#
- 1...Bg6
- 2.Sg2#
- 1...Sg3
- 2.Sg2#
- 2.Qf2#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sg2#
- 1...Kxe3
- 1.Be2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- Q(i);N_GUARD::S(E)
- B(g);S_CUTQ(i)::S(E)
- S(a);N_GUARD::QAR2(B),XS(a)
- S(h);S_CUTQ(i)::S(E)
- Tries
- Try
- K(G);P-FLIGHT
- Vars
- S(a);N_GUARD::QAR2(B),XS(a)
- Q(i);N_GUARD::S(E)
- Q(i);N_GUARD,P_PINS(H)::S(E)
- Q(i);N_GUARD,P_PINP(I)::S(E)
- B(g);S_CUTQ(i)::S(E)
- S(h);S_CUTQ(i)::S(E)
- Refutation
- Q(i);XP(C)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- P(c);::QAB1(B),XP(c)
- Q(i);::B(D)
- Q(i);P_PINS(H)::QAB1(B)
- Q(i);::QAB1(B)
- S(h);::QAB1(B)
- Refutation
- Q(i);XS(E)
- Try
- S(H);XP(b)
- Vars
- Q(i);CHECK,N_GUARD::S(E),XQ(i)
- S(a);N_GUARD::QAR2(B),XS(a)
- Q(i);N_GUARD::S(E)
- B(g);S_CUTQ(i)::S(E)
- S(h);S_CUTQ(i)::S(E)
- Refutation
- Q(i);P_PINS(H),XP(C)
- Try
- S(H);
- Vars
- Q(i);CHECK,N_GUARD::S(E),XQ(i)
- S(a);N_GUARD::QAR2(B),XS(a)
- Q(i);N_GUARD::S(E)
- B(g);S_CUTQ(i)::S(E)
- S(h);S_CUTQ(i)::S(E)
- Refutation
- Q(i);XP(C)
- Try
- S(H);
- Vars
- S(a);N_GUARD::QAR2(B),XS(a)
- Q(i);N_GUARD::S(E)
- B(g);S_CUTQ(i)::S(E)
- S(h);S_CUTQ(i)::S(E)
- Refutation
- Q(i);XP(C)
- Try
- B(D);
- Vars
- S(a);N_GUARD::QAR2(B),XS(a)
- Q(i);N_GUARD::S(E)
- B(g);S_CUTQ(i)::S(E)
- S(h);S_CUTQ(i)::S(E)
- Refutation
- Q(i);XP(C)
- Try
- B(D);
- Vars
- Q(i);N_GUARD,XP(C)::S(E)
- S(a);N_GUARD::QAR2(B),XS(a)
- Q(i);N_GUARD::S(E)
- B(g);S_CUTQ(i)::S(E)
- S(h);S_CUTQ(i)::S(E)
- Refutation
- P(b);XB(D)
- Try
- B(D);
- Vars
- S(a);N_GUARD::QAR2(B),XS(a)
- Q(i);N_GUARD::S(E)
- B(g);S_CUTQ(i)::S(E)
- S(h);S_CUTQ(i)::S(E)
- Refutation
- Q(i);XP(C)
- Try
- B(D);
- Vars
- S(a);N_GUARD::QAR2(B),XS(a)
- Q(i);N_GUARD::S(E)
- B(g);S_CUTQ(i)::S(E)
- S(h);S_CUTQ(i)::S(E)
- Refutation
- Q(i);XP(C)
- Try
- Q(B);CHECK
- Vars
- Q(i);SBLOCK,XQ(B)::S(E)
- S(a);SBLOCK,XQ(B)::S(E)
- Refutation
- K(d);S_FLIGHT,XQ(B)
- Try
- Actual
- B(A);
- Vars
- K(d);OGATEB,S_FLIGHT,XS(E)::B(D)
- Q(i);N_GUARD,XP(C)::S(E)
- S(a);N_GUARD::QAR2(B),XS(a)
- Q(i);N_GUARD::S(E)
- B(g);S_CUTQ(i)::S(E)
- S(h);S_CUTQ(i)::S(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).