MESON Chess Problem Database
Problem Display
PID: 241308 (8/2K2p2/N4p2/3k1P2/4qP2/1P1nP3/1n5p/5Q1B w - - 0 1)
Gavrilov, Constantin Grigorievich
Revista Romana de Sah, 1926
#2
8 + 7
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qxh1
- 2.Qxh1#
- 1...Qg2
- 2.Bxg2#
- 2.Qxg2#
- 1...Qf3
- 2.Bxf3#
- 2.Qxf3#
- 1...Sd1
- 2.Qxd3#
- 1...Sa4
- 2.Qxd3#
- 1...Sc4
- 2.Qxd3#
- 1...Sc1
- 2.Qb5#
- 1...Se1
- 2.Qb5#
- 1...Sf2
- 2.Qb5#
- 1...Sb4
- 2.Qb5#
- 1...Sxf4
- 2.Qb5#
- 1...Sc5
- 2.Sb4#
- 1...Se5
- 2.Qb5#
- 1...Qxh1
- Tries
- 1.Sb4+?
- 1...Sxb4
- 2.Qb5#
- 1...Kc5!
- 1...Sxb4
- 1.Qe2?
- 1...Sxf4
- 2.Qb5#
- 1...Qg2
- 2.Bxg2#
- 2.Qxg2#
- 1...Qf3
- 2.Bxf3#
- 2.Qxf3#
- 1...Sd1
- 2.Qxd3#
- 1...Sa4
- 2.Qxd3#
- 1...Sc4
- 2.Qxd3#
- 1...Sc1
- 2.Qb5#
- 1...Se1
- 2.Qb5#
- 1...Sf2
- 2.Qb5#
- 1...Sb4
- 2.Qb5#
- 1...Sc5
- 2.Sb4#
- 1...Se5
- 2.Qb5#
- 1...Qxh1!
- 1...Sxf4
- 1.Qg2?
- threat
- 2.Qxe4#
- 1...Qxg2
- 2.Bxg2#
- 1...Qf3
- 2.Qxf3#
- 1...Sc5
- 2.Sb4#
- 1...Sf2!
- threat
- 1.Qb1?
- 1...Qxh1
- 2.Qxh1#
- 1...Sxf4
- 2.Qxe4#
- 1...Qg2
- 2.Bxg2#
- 1...Qf3
- 2.Bxf3#
- 1...Sd1
- 2.Qxd3#
- 1...Sa4
- 2.Qxd3#
- 1...Sc4
- 2.Qxd3#
- 1...Sc1
- 2.Bxe4#
- 2.Qxe4#
- 1...Se1
- 2.Bxe4#
- 2.Qxe4#
- 1...Sb4
- 2.Bxe4#
- 2.Qxe4#
- 1...Sc5
- 2.Sb4#
- 1...Se5
- 2.Bxe4#
- 2.Qxe4#
- 1...Sf2!
- 1...Qxh1
- 1.Qc1?
- threat
- 2.Qc6#
- 1...Sxf4
- 2.Qc5#
- 1...Sc4
- 2.Qxc4#
- 2.bxc4#
- 1...Sb4
- 2.Sxb4#
- 2.Qc5#
- 1...Sc5
- 2.Sb4#
- 2.Qxc5#
- 1...Se5
- 2.Sb4#
- 2.Qc5#
- 1...Sxc1!
- threat
- 1.Qd1?
- 1...Qxh1
- 2.Qxh1#
- 1...Qg2
- 2.Bxg2#
- 1...Qf3
- 2.Bxf3#
- 2.Qxf3#
- 1...Sa4
- 2.Qxd3#
- 1...Sc4
- 2.Qxd3#
- 1...Sxd1!
- 1...Qxh1
- 1.Qf3?
- threat
- 2.Qxe4#
- 1...Qxf3
- 2.Bxf3#
- 1...Sc5
- 2.Sb4#
- 1...Sf2!
- threat
- 1.Sb4+?
- Keys
- 1.Qa1!
- 1...Qxh1
- 2.Qxh1#
- 1...Sxf4
- 2.Qa5#
- 1...Qg2
- 2.Bxg2#
- 1...Qf3
- 2.Bxf3#
- 1...Sd1
- 2.Qd4#
- 1...Sa4
- 2.Qd4#
- 1...Sc4
- 2.Qd4#
- 1...Sc1
- 2.Qa5#
- 1...Se1
- 2.Qa5#
- 1...Sf2
- 2.Qa5#
- 1...Sb4
- 2.Qa5#
- 1...Sc5
- 2.Sb4#
- 1...Se5
- 2.Qa5#
- 1...Qxh1
- 1.Qa1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 9
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- Q(d);N_SPINQ(d),OGATE,XB(B)::QAB(A),XQ(d)
- S(a);N_GUARD::QAR2(A),XS(c)
- S(c);OGATE::QAR2(A)
- S(c);OGATE,XP(E)::QAR2(A)
- S(c);N_GUARD,SBLOCK::S(G)
- Tries
- Try
- S(G);CHECK
- Vars
- S(c);OGATE,XS(G)::QAR2(A)
- Refutation
- K(e);N_SPINQ(d),P-FLIGHT
- Try
- Q(A);
- Vars
- S(c);OGATE,XP(E)::QAR2(A)
- S(a);N_GUARD::QAR2(A),XS(c)
- S(c);OGATE::QAR2(A)
- S(c);N_GUARD,SBLOCK::S(G)
- Refutation
- Q(d);N_SPINQ(d),XB(B)
- Try
- Q(A);
- Threat
- QAB1(A),XQ(d)
- Vars
- Q(d);OGATE,XQ(A)::B(B),XQ(d)
- Q(d);OGATEB::QAB(A),XQ(d)
- S(c);N_GUARD,SBLOCK::S(G)
- Refutation
- S(c);
- Try
- Q(A);
- Vars
- Q(d);N_SPINQ(d),OGATE,XB(B)::QAB(A),XQ(d)
- S(c);OGATE,XP(E)::QAB1(A),XQ(d)
- Q(d);OGATEB::B(B),XQ(d)
- S(a);N_GUARD::QAR2(A),XS(c)
- S(c);N_GUARD,SBLOCK::S(G)
- Refutation
- S(c);
- Try
- Q(A);
- Threat
- QAB1(A)
- Vars
- S(c);N_GUARD,XP(E)::QAR1(A)
- Refutation
- S(c);XQ(A)
- Try
- Q(A);P_PINS(c)
- Vars
- Q(d);N_SPINQ(d),OGATE,XB(B)::QAB(A),XQ(d)
- Q(d);OGATEB::B(B),XQ(d)
- S(a);N_GUARD::QAR2(A),XS(c)
- Refutation
- S(a);N_SPINS(c),XQ(A)
- Try
- Q(A);
- Threat
- QAB1(A),XQ(d)
- Vars
- Q(d);OGATE,XQ(A)::B(B),XQ(d)
- S(c);N_GUARD,SBLOCK::S(G)
- Refutation
- S(c);
- Try
- Actual
- Q(A);
- Vars
- Q(d);N_SPINQ(d),OGATE,XB(B)::QAB(A),XQ(d)
- S(c);N_GUARD,XP(E)::QAR(A)
- Q(d);OGATEB::B(B),XQ(d)
- S(a);OGATE::QAR1(A)
- S(c);N_GUARD::QAR(A)
- S(c);N_GUARD,SBLOCK::S(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).