MESON Chess Problem Database
Problem Display
PID: 150654 (6Bb/6B1/Np6/P5QK/3PPR1p/RNk2r2/npp1P3/1r3b1q w - - 0 1)
Shedey, Sergey Oleksandrovich
USSR Championship, 1990
#2
12 + 11
| 23 | Die Schwalbe | 2013 |
SOLUTION
- SOUND
- Sets
- 1...Qh2
- 2.Rxf3#
- 1...bxa5
- 2.Qc5#
- 1...b5
- 2.Qc5#
- 1...Qh2
- Tries
- 1.Rg4?
- threat
- 2.Sa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sbc5#
- 2.Qd2#
- 1...Bxg7
- 2.Qd2#
- 1...Rf7
- 2.Sd2#
- 1...c1Q
- 2.Sa1#
- 1...c1S
- 2.Qd2#
- 1...c1B
- 2.Sa1#
- 1...c1R
- 2.Sa1#
- 2.Qd2#
- 1...Ra1
- 2.Sxa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sbc5#
- 2.Qd2#
- 1...Rc1
- 2.Sa1#
- 2.Sxc1#
- 2.Sd2#
- 2.Sbc5#
- 2.Qd2#
- 1...Rd1
- 2.Sa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sbc5#
- 1...Rd3
- 2.Sa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sbc5#
- 1...Re3
- 2.Qxe3#
- 1...Rf5
- 2.Sa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sbc5#
- 1...Rf6
- 2.Qd2#
- 2.Qe3#
- 1...Sc1
- 2.Sxc1#
- 2.Qd2#
- 1...Rf4!
- threat
- 1.Rf5?
- threat
- 2.Sa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sbc5#
- 2.Qd2#
- 1...Rxf5
- 2.Sa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sbc5#
- 1...Bxg7
- 2.Qd2#
- 1...c1Q
- 2.Sa1#
- 1...c1S
- 2.Qd2#
- 1...c1B
- 2.Sa1#
- 1...c1R
- 2.Sa1#
- 2.Qd2#
- 1...Ra1
- 2.Sxa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sbc5#
- 2.Qd2#
- 1...Rc1
- 2.Sa1#
- 2.Sxc1#
- 2.Sd2#
- 2.Sbc5#
- 2.Qd2#
- 1...Rd1
- 2.Sa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sbc5#
- 1...Rd3
- 2.Sa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sbc5#
- 1...Re3
- 2.Qxe3#
- 1...Sc1
- 2.Sxc1#
- 2.Qd2#
- 1...Rf4!
- threat
- 1.Rf6?
- threat
- 2.Rc6#
- 2.Qd2#
- 1...Rxf6
- 2.Qd2#
- 2.Qe3#
- 1...Bxe2
- 2.Qd2#
- 1...c1Q
- 2.Rc6#
- 1...c1B
- 2.Rc6#
- 1...Rf4
- 2.Rc6#
- 1...Rd1
- 2.Rc6#
- 1...Rd3
- 2.Rc6#
- 1...Re3
- 2.Rc6#
- 2.Qxe3#
- 1...Sb4
- 2.Qd2#
- 1...Rf5!
- threat
- 1.Rf7?
- threat
- 2.Sd2#
- 2.Rc7#
- 1...Kc4
- 2.Sd2#
- 2.Rxf3#
- 2.Rc7#
- 1...Rxf7
- 2.Sd2#
- 1...Bxe2
- 2.Sd2#
- 1...Bxg7
- 2.Rc7#
- 1...c1Q
- 2.Rc7#
- 1...c1S
- 2.Rc7#
- 1...c1B
- 2.Rc7#
- 1...c1R
- 2.Rc7#
- 1...Rf4
- 2.Rc7#
- 1...Qh2
- 2.Sd2#
- 2.Rxf3#
- 1...Re3
- 2.Rc7#
- 1...Rf5
- 2.Sd2#
- 1...Sc1
- 2.Rc7#
- 1...Sb4
- 2.Sd2#
- 1...Rf6!
- threat
- 1.Qe7?
- threat
- 2.Qc7#
- 1...Sb4
- 2.Qxb4#
- 1...Bxe2!
- threat
- 1.Qb5?
- threat
- 2.Qc4#
- 2.Qc6#
- 1...Sb4
- 2.Qc4#
- 2.Qxb4#
- 1...Bxe2!
- threat
- 1.Qd5?
- threat
- 2.Qc4#
- 2.Qc6#
- 1...Sb4
- 2.Qc4#
- 1...b5
- 2.Qc6#
- 2.Qc5#
- 1...Bxe2!
- threat
- 1.d5+?
- 1...Kc4
- 2.d6#
- 1...Bxg7!
- 1...Kc4
- 1.Rg4?
- Keys
- 1.Rf8!
- threat
- 2.Sa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sbc5#
- 2.Rc8#
- 2.Qd2#
- 1...Rxf8
- 2.Sa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sbc5#
- 2.Qd2#
- 2.Qe3#
- 1...Bxe2
- 2.Sa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sbc5#
- 2.Qd2#
- 1...Bxg7
- 2.Rc8#
- 2.Qd2#
- 1...Rf7
- 2.Sd2#
- 1...c1Q
- 2.Sa1#
- 2.Rc8#
- 1...c1S
- 2.Rc8#
- 2.Qd2#
- 1...c1B
- 2.Sa1#
- 2.Rc8#
- 1...c1R
- 2.Sa1#
- 2.Rc8#
- 2.Qd2#
- 1...Rf4
- 2.Rc8#
- 1...Qh2
- 2.Sa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sbc5#
- 2.Rxf3#
- 2.Qd2#
- 1...Qh3
- 2.Sa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sbc5#
- 2.Qd2#
- 1...Ra1
- 2.Sxa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sbc5#
- 2.Rc8#
- 2.Qd2#
- 1...Rc1
- 2.Sa1#
- 2.Sxc1#
- 2.Sd2#
- 2.Sbc5#
- 2.Rc8#
- 2.Qd2#
- 1...Rd1
- 2.Sa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sbc5#
- 2.Rc8#
- 1...Rd3
- 2.Sa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sbc5#
- 2.Rc8#
- 1...Re3
- 2.Rc8#
- 2.Qxe3#
- 1...Rf5
- 2.Sa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sbc5#
- 1...Rf6
- 2.Qd2#
- 2.Qe3#
- 1...Bh3
- 2.Sa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sbc5#
- 2.Qd2#
- 1...Sc1
- 2.Sxc1#
- 2.Rc8#
- 2.Qd2#
- 1...Sb4
- 2.Sa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sbc5#
- 2.Qd2#
- threat
- 1.Rf8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- Q(c);N_GUARD::R(F),XR(h)
- P(j);N_GUARD,XP(G)::QAR2(H)
- P(j);N_GUARD::QAR2(H)
- Tries
- Try
- R(F);
- Threat
- DUALS(5)
- Vars
- B(k);XB(K)::QAB1(H)
- R(h);::R(B)+S(C)
- P(f);::R(B)+S(C)
- P(f);::QAB1(H)
- R(h);N_GUARD::QAR2(H),XR(h)
- Refutation
- R(h);
- Try
- R(F);
- Threat
- DUALS(5)
- Vars
- B(k);XB(K)::QAB1(H)
- P(f);::R(B)+S(C)
- P(f);::QAB1(H)
- R(h);N_GUARD::QAR2(H),XR(h)
- Refutation
- R(h);
- Try
- R(F);
- Threat
- DUALS(2)
- Vars
- B(b);XP(A)::QAB1(H)
- P(f);::R(F)
- R(h);::R(F)
- R(a);::R(F)
- S(d);::QAB1(H)
- Refutation
- R(h);P_PINQ(H)
- Try
- R(F);
- Threat
- DUALS(2)
- Vars
- R(h);XR(F)::R(B)+S(C)
- B(b);XP(A)::R(B)+S(C)
- B(k);XB(K)::R(F)
- P(f);::R(F)
- R(h);::R(F)
- R(h);P_PINQ(H)::R(B)+S(C)
- S(d);::R(F)
- S(d);::R(B)+S(C)
- Refutation
- R(h);
- Try
- Q(H);
- Threat
- QAR(H)
- Vars
- S(d);N_GUARD::QAB1(H),XS(d)
- Refutation
- B(b);XP(A)
- Try
- Q(H);
- Threat
- DUALS(2)
- Refutation
- B(b);XP(A)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- S(d);::QAR1(H)
- Refutation
- B(b);XP(A)
- Try
- P(D);CHECK
- Vars
- K(g);P-FLIGHT::B(L)+P(D)
- Refutation
- B(k);XB(K)
- Try
- Actual
- R(F);
- Threat
- DUALS(6)
- Vars
- R(h);::R(B)+S(C)
- R(h);::R(F)
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).