MESON Chess Problem Database
Problem Display
PID: 179693 (n2R1b2/B1pNp1p1/prR3K1/6P1/3k4/2NP2p1/2PPp1B1/4r3 w - - 0 1)
Kopnin, Aleksey Grigorevich
Sahs (Latvia), 1962
#2
11 + 11
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sxe2#
- 1...Rb1
- 2.Sxe2#
- 1...Rc1
- 2.Sxe2#
- 1...Rd1
- 2.Sxe2#
- 1...Rf1
- 2.Sxe2#
- 1...Rg1
- 2.Sxe2#
- 1...Rh1
- 2.Sxe2#
- 1...a5
- 2.Sb5#
- 1...e5
- 2.Sxf8#
- 1...e6
- 2.Rc4#
- 1...Ra1
- Tries
- 1.Bf3?
- 1...Ra1
- 2.Sxe2#
- 1...Rb1
- 2.Sxe2#
- 1...Rc1
- 2.Sxe2#
- 1...Rd1
- 2.Sxe2#
- 1...Rf1
- 2.Sxe2#
- 1...Rg1
- 2.Sxe2#
- 1...Rh1
- 2.Sxe2#
- 1...a5
- 2.Sb5#
- 1...e5
- 2.Sxf8#
- 1...e6
- 2.Rc4#
- 1...g2!
- 1...Ra1
- 1.Be4?
- 1...Ra1
- 2.Sxe2#
- 1...Rb1
- 2.Sxe2#
- 1...Rc1
- 2.Sxe2#
- 1...Rd1
- 2.Sxe2#
- 1...Rf1
- 2.Sxe2#
- 1...Rg1
- 2.Sxe2#
- 1...Rh1
- 2.Sxe2#
- 1...a5
- 2.Sb5#
- 1...e5
- 2.Sxf8#
- 1...e6
- 2.Rc4#
- 1...g2!
- 1...Ra1
- 1.Bxb6+?
- 1...cxb6
- 2.Rc4#
- 1...Sxb6!
- 1...cxb6
- 1.Rxa8?
- 1...Ra1
- 2.Sxe2#
- 1...Rb1
- 2.Sxe2#
- 1...Rc1
- 2.Sxe2#
- 1...Rd1
- 2.Sxe2#
- 1...Rf1
- 2.Sxe2#
- 1...Rg1
- 2.Sxe2#
- 1...Rh1
- 2.Sxe2#
- 1...a5
- 2.Sb5#
- 1...e6
- 2.Rc4#
- 1...e5!
- 1...Ra1
- 1.Rb8?
- 1...Ra1
- 2.Sxe2#
- 1...Rb1
- 2.Sxe2#
- 1...Rc1
- 2.Sxe2#
- 1...Rd1
- 2.Sxe2#
- 1...Rf1
- 2.Sxe2#
- 1...Rg1
- 2.Sxe2#
- 1...Rh1
- 2.Sxe2#
- 1...a5
- 2.Sb5#
- 1...e6
- 2.Rc4#
- 1...e5!
- 1...Ra1
- 1.Rc8?
- 1...Ra1
- 2.Sxe2#
- 1...Rb1
- 2.Sxe2#
- 1...Rc1
- 2.Sxe2#
- 1...Rd1
- 2.Sxe2#
- 1...Rf1
- 2.Sxe2#
- 1...Rg1
- 2.Sxe2#
- 1...Rh1
- 2.Sxe2#
- 1...a5
- 2.Sb5#
- 1...e6
- 2.Rc4#
- 1...e5!
- 1...Ra1
- 1.Re8?
- 1...Ra1
- 2.Sxe2#
- 1...Rb1
- 2.Sxe2#
- 1...Rc1
- 2.Sxe2#
- 1...Rd1
- 2.Sxe2#
- 1...Rf1
- 2.Sxe2#
- 1...Rg1
- 2.Sxe2#
- 1...Rh1
- 2.Sxe2#
- 1...a5
- 2.Sb5#
- 1...e6
- 2.Rc4#
- 1...e5!
- 1...Ra1
- 1.Rxf8?
- threat
- 2.Rf4#
- 1...Rf1
- 2.Sxe2#
- 1...e5!
- threat
- 1.Bf3?
- Keys
- 1.Re6!
- 1...Ra1
- 2.Sxe2#
- 1...Rb1
- 2.Sxe2#
- 1...Rc1
- 2.Sxe2#
- 1...Rd1
- 2.Sxe2#
- 1...Rf1
- 2.Sxe2#
- 1...Rg1
- 2.Sxe2#
- 1...Rh1
- 2.Sxe2#
- 1...a5
- 2.Sb5#
- 1...c5
- 2.Sxb6#
- 1...c6
- 2.Re4#
- 1...Ra1
- 1.Re6!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- R(a);N_GUARD::S(D),XP(b)
- P(e);N_GUARD::S(D)
- P(h);SBLOCK::R(K)+S(J),XB(k)
- P(h);N_PINR(G)::R1(G)
- Tries
- Try
- B(C);
- Vars
- R(a);N_GUARD::S(D),XP(b)
- P(e);N_GUARD::S(D)
- P(h);SBLOCK::R(K)+S(J),XB(k)
- P(h);N_PINR(G)::R1(G)
- Refutation
- P(c);
- Try
- B(C);
- Vars
- R(a);N_GUARD::S(D),XP(b)
- P(e);N_GUARD::S(D)
- P(h);SBLOCK::R(K)+S(J),XB(k)
- P(h);N_PINR(G)::R1(G)
- Refutation
- P(c);
- Try
- B(I);CHECK,N_SPINR(G),XR(f)
- Vars
- P(g);XB(I)::R1(G)
- Refutation
- S(j);XB(I)
- Try
- R(K);XS(j)
- Vars
- R(a);N_GUARD::S(D),XP(b)
- P(e);N_GUARD::S(D)
- P(h);N_PINR(G)::R1(G)
- Refutation
- P(h);
- Try
- R(K);
- Vars
- R(a);N_GUARD::S(D),XP(b)
- P(e);N_GUARD::S(D)
- P(h);N_PINR(G)::R1(G)
- Refutation
- P(h);
- Try
- R(K);
- Vars
- R(a);N_GUARD::S(D),XP(b)
- P(e);N_GUARD::S(D)
- P(h);N_PINR(G)::R1(G)
- Refutation
- P(h);
- Try
- R(K);
- Vars
- R(a);N_GUARD::S(D),XP(b)
- P(e);N_GUARD::S(D)
- P(h);N_PINR(G)::R1(G)
- Refutation
- P(h);
- Try
- R(K);XB(k)
- Threat
- R(K)
- Vars
- R(a);N_GUARD::S(D),XP(b)
- Refutation
- P(h);
- Try
- Actual
- R(G);
- Vars
- R(a);N_GUARD::S(D),XP(b)
- P(e);N_GUARD::S(D)
- P(g);N_SPINR(f),SBLOCK::R(K)+S(J),XR(f)
- P(g);N_PINR(G)::R1(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).