MESON Chess Problem Database
Problem Display
PID: 274787 (2nKR3/1B1N4/2p1P3/1N1k2r1/n3p1p1/1P4Q1/2P1R3/2qr4 w - - 0 1)
Markovsky, Grigory F
Comm., Buletin Problemistic, 1981
#2
10 + 9
| 15601 | Albrecht-Leiss-Degener Collection | 2024 |
SOLUTION
- SOUND
- Sets
- 1...Qb2
- 2.c4#
- 1...Qd2
- 2.c4#
- 1...Qa3
- 2.c4#
- 1...Qe3
- 2.c4#
- 1...Qf4
- 2.c4#
- 1...Qa1
- 2.c4#
- 1...Qb1
- 2.c4#
- 1...Rd4
- 2.Sc7#
- 1...Re5
- 2.Qxe5#
- 1...Rg6
- 2.Qe5#
- 1...Rg7
- 2.Qe5#
- 1...Rg8
- 2.Qe5#
- 1...Sc5
- 2.Sf6#
- 1...Sb6
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sa7
- 2.Qd6#
- 1...Se7
- 2.Qd6#
- 1...e3
- 2.Qg2#
- 1...Qb2
- Tries
- 1.Kxc8?
- threat
- 2.Qd6#
- 1...e3
- 2.Qg2#
- 1...Qa3
- 2.c4#
- 1...Qf4
- 2.c4#
- 1...Re5
- 2.Qxe5#
- 1...Sb6+!
- threat
- 1.Sc3+?
- 1...Kd4
- 2.Rxe4#
- 1...Sxc3!
- 1...Kd4
- 1.Bxc8?
- threat
- 2.Qd6#
- 1...e3
- 2.Qg2#
- 1...Qa3
- 2.c4#
- 1...Qf4
- 2.c4#
- 1...Re5
- 2.Qxe5#
- 1...cxb5!
- threat
- 1.Rd2+?
- 1...Qxd2
- 2.c4#
- 1...Rxd2!
- 1...Qxd2
- 1.Qf4?
- threat
- 2.Qxe4#
- 1...Qxf4
- 2.c4#
- 1...Qxc2
- 2.Qxg5#
- 1...Qe3
- 2.c4#
- 1...Rd4
- 2.Sc7#
- 1...Re5
- 2.Qxe5#
- 1...Sc5
- 2.Sf6#
- 1...Sd6
- 2.Qxd6#
- 1...e3
- 2.Sc7#
- 2.Qc4#
- 1...Sc3!
- threat
- 1.Qc7?
- threat
- 2.Bxc6#
- 2.Qxc6#
- 1...Se7
- 2.Qd6#
- 1...Sa7
- 2.Qd6#
- 1...Qxc2!
- threat
- 1.Qc3?
- threat
- 2.Sf6#
- 2.Bxc6#
- 2.Qc4#
- 2.Qxc6#
- 1...Qxc2
- 2.Sf6#
- 2.Bxc6#
- 1...Se7
- 2.Qc4#
- 1...Qf4
- 2.Bxc6#
- 2.Qc4#
- 2.Qxc6#
- 1...Rf1
- 2.Bxc6#
- 2.Qd4#
- 2.Qc4#
- 2.Qxc6#
- 1...Rd4
- 2.Bxc6#
- 2.Qxd4#
- 2.Qxc6#
- 1...Rf5
- 2.Bxc6#
- 2.Qc4#
- 2.Qxc6#
- 1...Rg6
- 2.Bxc6#
- 2.Qe5#
- 2.Qc4#
- 2.Qxc6#
- 1...Sb2
- 2.Sf6#
- 2.Bxc6#
- 2.Qc5#
- 2.Qxc6#
- 1...Sc5
- 2.Sf6#
- 2.Qc4#
- 2.Qxc5#
- 1...Sab6
- 2.Sf6#
- 2.Bxc6#
- 2.Qc5#
- 2.Qxc6#
- 1...Scb6
- 2.Sf6#
- 2.Bxc6#
- 2.Qxc6#
- 1...Sd6
- 2.Sc7#
- 2.Sf6#
- 2.Bxc6#
- 2.Qxc6#
- 1...Sa7
- 2.Sf6#
- 2.Qc4#
- 1...Sxc3!
- threat
- 1.Kxc8?
- Keys
- 1.Qe3!
- threat
- 2.Qxe4#
- 1...Qxe3
- 2.c4#
- 1...Qxc2
- 2.Qxg5#
- 1...Rd4
- 2.Qxd4#
- 1...Re5
- 2.Sf6#
- 1...Sc3
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Sd6
- 2.Sc7#
- threat
- 1.Qe3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 2
- REMOVED MATES = 13
- Sets
- Q(a);N_GUARD::P(A)
- R(b);SBLOCK::S(E)
- R(g);N_GUARD::QAR1(D),XR(g)
- R(g);N_GUARD::QAR1(D)
- R(g);N_GUARD,P_PINR(J)::QAR1(D)
- S(c);SBLOCK::S(H)
- S(i);N_GUARD::QAR1(D)
- S(i);N_GUARD::QAR1(D),XS(i)
- P(d);OGATEB::QAB(D)
- Tries
- Try
- K(I);P-FLIGHT,XS(i)
- Threat
- QAR1(D)
- Vars
- P(d);OGATEB::QAB(D)
- Q(a);N_GUARD::P(A)
- R(g);N_GUARD::QAR1(D),XR(g)
- Refutation
- S(c);CHECK
- Try
- S(E);CHECK
- Vars
- K(f);N_SPINP(h),P-FLIGHT,S_CUTS(c)::R1(B),XP(d)
- Refutation
- S(c);XS(E)
- Try
- B(G);N_PINP(h),XS(i)
- Threat
- QAR1(D)
- Vars
- P(d);OGATEB::QAB(D)
- Q(a);N_GUARD::P(A)
- R(g);N_GUARD::QAR1(D),XR(g)
- Refutation
- P(h);XS(E)
- Try
- R(B);CHECK
- Vars
- Q(a);XR(B)::P(A)
- Refutation
- R(b);XR(B)
- Try
- Q(D);
- Threat
- QAB1(D),XP(d)
- Vars
- Q(a);N_GUARD,XQ(D)::P(A)
- Q(a);N_GUARD,XP(A)::QAR(D),XR(g)
- Q(a);N_GUARD::P(A)
- R(b);SBLOCK::S(E)
- R(g);N_GUARD::QAR1(D),XR(g)
- S(c);SBLOCK::S(H)
- S(i);N_GUARD::QAR1(D),XS(i)
- Refutation
- S(c);
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- S(i);N_GUARD::QAR1(D)
- Refutation
- Q(a);XP(A)
- Try
- Q(D);
- Threat
- DUALS(4)
- Vars
- S(i);::QAB1(D)
- Refutation
- S(c);XQ(D)
- Try
- Actual
- Q(D);
- Threat
- QAB1(D),XP(d)
- Vars
- Q(a);N_GUARD,XQ(D)::P(A)
- Q(a);N_GUARD,XP(A)::QAR(D),XR(g)
- R(b);N_GUARD::QAR1(D),XR(b)
- R(g);SBLOCK::S(H)
- S(c);N_GUARD::QAR1(D)
- S(c);N_GUARD::QAR1(D),XS(c)
- S(i);SBLOCK::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).