MESON Chess Problem Database
Problem Display
PID: 245419 (r4b2/1R2p3/2N1k1Kn/8/2PR1pp1/n1Q5/8/1B4r1 w - - 0 1)
Pankratiev, Aleksandr Nikolaevich
64 Shakhmatnoe obozrenie, 1990
#2
7 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Re1
- 2.Qxe1#
- 1...Bg7
- 2.Rxe7#
- 1...Sxc4
- 2.Qxc4#
- 1...Sf5
- 2.Bxf5#
- 1...Sf7
- 2.Bf5#
- 1...Sg8
- 2.Bf5#
- 1...f3
- 2.Qe3#
- 1...Re1
- Tries
- 1.Sd8+?
- 1...Ke5
- 2.Rd1#
- 2.Rd2#
- 2.Rd5#
- 2.Rdd7#
- 1...Rxd8!
- 1...Ke5
- 1.Rd2?
- threat
- 2.Qe5#
- 1...Sxc4
- 2.Qxc4#
- 1...Ra5
- 2.Sd8#
- 1...Bg7
- 2.Rxe7#
- 1...Sf7
- 2.Bf5#
- 1...Re1!
- threat
- 1.Rd3?
- threat
- 2.Qe5#
- 1...Sxc4
- 2.Qxc4#
- 1...Re1
- 2.Qxe1#
- 1...Ra5
- 2.Sd8#
- 1...Bg7
- 2.Rxe7#
- 1...Sf7!
- threat
- 1.Rd5?
- threat
- 2.Sd4#
- 2.Qe5#
- 1...Rd1
- 2.Qe5#
- 1...Re1
- 2.Sd4#
- 2.Qxe1#
- 1...Bg7
- 2.Rxe7#
- 1...Sc2
- 2.Qe5#
- 1...Sb5
- 2.Qe5#
- 1...Sf5
- 2.Bxf5#
- 2.Qe5#
- 1...Sf7
- 2.Sd4#
- 2.Bf5#
- 1...Sxc4!
- threat
- 1.Rd6+?
- 1...exd6
- 2.Qf6#
- 1...Kxd6!
- 1...exd6
- 1.Rdd7?
- threat
- 2.Qe5#
- 1...Sxc4
- 2.Qxc4#
- 1...Re1
- 2.Qxe1#
- 1...Ra5
- 2.Sd8#
- 1...Sf7
- 2.Bf5#
- 1...Bg7!
- threat
- 1.Rd8?
- threat
- 2.Qe5#
- 1...Sxc4
- 2.Qxc4#
- 1...Re1
- 2.Qxe1#
- 1...Bg7
- 2.Rxe7#
- 1...Sf7
- 2.Bf5#
- 1...Ra5!
- threat
- 1.Qb4?
- threat
- 2.Re4#
- 1...Sxc4
- 2.Qxc4#
- 1...Re1
- 2.Qxe1#
- 1...Bg7
- 2.Rxe7#
- 2.Qxe7#
- 1...Sf7
- 2.Bf5#
- 1...Ra5!
- threat
- 1.Sd8+?
- Keys
- 1.Rd1!
- threat
- 2.Qe5#
- 1...Sxc4
- 2.Qxc4#
- 1...Re1
- 2.Qxe1#
- 1...Ra5
- 2.Sd8#
- 1...Bg7
- 2.Rxe7#
- 1...Sf7
- 2.Bf5#
- threat
- 1.Rd1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- R(a);N_GUARD::QAR(B),XR(a)
- B(i);N_GUARD::R1(G),XP(g)
- S(b);OGATE,XP(C)::QAB(B),XS(b)
- S(f);N_GUARD::B(A),XS(f)
- S(f);N_GUARD::B(A)
- P(c);N_GUARD::QAR(B)
- Tries
- Try
- S(E);CHECK
- Refutation
- R(h);XS(E)
- Try
- R(D);
- Threat
- QAR1(B)
- Vars
- S(b);OGATE,XP(C)::QAB(B),XS(b)
- R(h);N_GUARD::S(E)
- B(i);N_GUARD::R1(G),XP(g)
- S(f);N_GUARD::B(A)
- Refutation
- R(a);
- Try
- R(D);
- Threat
- QAR1(B)
- Vars
- S(b);OGATE,XP(C)::QAB(B),XS(b)
- R(a);N_GUARD::QAR(B),XR(a)
- R(h);N_GUARD::S(E)
- B(i);N_GUARD::R1(G),XP(g)
- Refutation
- S(f);
- Try
- R(D);
- Threat
- DUALS(2)
- Vars
- R(a);::QAR1(B)
- B(i);N_GUARD::R1(G),XP(g)
- S(b);::QAR1(B)
- Refutation
- S(b);XP(C)
- Try
- R(D);CHECK
- Vars
- P(g);SBLOCK,XR(D)::QAR1(B)
- Refutation
- K(e);P-FLIGHT,XR(D)
- Try
- R(D);
- Threat
- QAR1(B)
- Vars
- S(b);OGATE,XP(C)::QAB(B),XS(b)
- R(a);N_GUARD::QAR(B),XR(a)
- R(h);N_GUARD::S(E)
- S(f);N_GUARD::B(A)
- Refutation
- B(i);
- Try
- R(D);
- Threat
- QAR1(B)
- Vars
- S(b);OGATE,XP(C)::QAB(B),XS(b)
- R(a);N_GUARD::QAR(B),XR(a)
- B(i);N_GUARD::R1(G),XP(g)
- S(f);N_GUARD::B(A)
- Refutation
- R(h);
- Try
- Q(B);
- Threat
- R(D)
- Vars
- S(b);OGATE,XP(C)::QAB(B),XS(b)
- R(a);N_GUARD::QAR(B),XR(a)
- S(f);N_GUARD::B(A)
- Refutation
- R(h);
- Try
- Actual
- R(D);
- Threat
- QAR1(B)
- Vars
- S(b);OGATE,XP(C)::QAB(B),XS(b)
- R(a);N_GUARD::QAR(B),XR(a)
- R(h);N_GUARD::S(E)
- B(i);N_GUARD::R1(G),XP(g)
- S(f);N_GUARD::B(A)
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).