MESON Chess Problem Database
Problem Display
PID: 254397 (1Q2bqn1/p2p1P2/K1kN4/1p4R1/p1r1p2r/4P1nB/7B/2R5 w - - 0 1)
Rossomakho, Yakov V
Zadachi i Etyudi, 2005
#2
9 + 12
SOLUTION
- SOUND
- Sets
- 1...Qxd6
- 2.Qb7#
- 1...Rc2
- 2.Rxc2#
- 1...Rc3
- 2.Rxc3#
- 1...Rc5
- 2.Rcxc5#
- 2.Rgxc5#
- 1...Sf1
- 2.Qb7#
- 2.Qc8#
- 1...Sh1
- 2.Qb7#
- 2.Qc8#
- 1...Se2
- 2.Qb7#
- 2.Qc8#
- 1...Sh5
- 2.Qb7#
- 2.Qc8#
- 1...b4
- 2.Rxc4#
- 1...Qxd6
- Tries
- 1.Sxc4?
- threat
- 2.Sa5#
- 2.Sd6#
- 2.Qb7#
- 2.Qc8#
- 1...Qxf7
- 2.Sa5#
- 2.Qd6#
- 2.Qb7#
- 2.Qc8#
- 1...Bxf7
- 2.Sa5#
- 2.Qb7#
- 1...Sf5
- 2.Qxb5#
- 1...d5
- 2.Sa5#
- 2.Se5#
- 2.Sd6#
- 2.Qc8#
- 1...Qa3
- 2.Sxa3#
- 2.Sa5#
- 2.Qb7#
- 2.Qc8#
- 1...Qb4
- 2.Sa5#
- 2.Qb7#
- 2.Qc8#
- 1...Qc5
- 2.Sa5#
- 2.Qb7#
- 2.Qc8#
- 1...Qd6
- 2.Sa5#
- 2.Sxd6#
- 2.Qxd6#
- 2.Qb7#
- 1...Qg7
- 2.Sa5#
- 2.Qd6#
- 2.Qb7#
- 2.Qc8#
- 1...Se2
- 2.Sa5#
- 2.Qc7#
- 2.Qxb5#
- 2.Qb7#
- 2.Qa8#
- 2.Qc8#
- 1...Se7
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sb6#
- 2.Sd6#
- 2.Qd6#
- 2.Qb7#
- 1...d6
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sb6#
- 2.Sxd6#
- 2.Qb7#
- 2.Qc8#
- 1...bxc4!
- threat
- 1.Sxe4?
- threat
- 2.Qb7#
- 2.Qc8#
- 1...Bxf7
- 2.Qb7#
- 1...Sf5
- 2.Qxb5#
- 2.Qb7#
- 2.Qa8#
- 1...Qd6
- 2.Qxd6#
- 2.Qb7#
- 1...Se7
- 2.Qd6#
- 2.Qb7#
- 1...Rxe4!
- threat
- 1.Sxb5?
- threat
- 2.Sd4#
- 2.Sxa7#
- 2.Qc7#
- 2.Qb7#
- 2.Qa8#
- 2.Qc8#
- 1...Bxf7
- 2.Sd4#
- 2.Sxa7#
- 2.Qc7#
- 2.Qb7#
- 1...d5
- 2.Qc7#
- 2.Qc8#
- 1...Qc5
- 2.Qc7#
- 2.Qb7#
- 2.Qa8#
- 2.Qc8#
- 1...Qd6
- 2.Sxa7#
- 2.Qxd6#
- 2.Qb7#
- 2.Qa8#
- 1...Qg7
- 2.Sxa7#
- 2.Rxc4#
- 2.Qd6#
- 2.Qc7#
- 2.Qb7#
- 2.Qa8#
- 2.Qc8#
- 1...Se2
- 2.Sxa7#
- 2.Qc7#
- 2.Qb7#
- 2.Qa8#
- 2.Qc8#
- 1...Se7
- 2.Sd4#
- 2.Sxa7#
- 2.Rxc4#
- 2.Qd6#
- 2.Qc7#
- 2.Qb7#
- 2.Qa8#
- 1...Sf5!
- threat
- 1.Sb7?
- threat
- 2.Sa5#
- 2.Sd8#
- 2.Qc8#
- 1...Bxf7
- 2.Sa5#
- 1...Qb4
- 2.Sd8#
- 2.Qc8#
- 1...Qd6
- 2.Sa5#
- 2.Sd8#
- 2.Qxd6#
- 1...Qe7
- 2.Sa5#
- 2.Qc8#
- 1...Se7
- 2.Sa5#
- 2.Sd8#
- 2.Qd6#
- 1...d5
- 2.Qc8#
- 1...Sf5!
- threat
- 1.Sc8?
- threat
- 2.Sxa7#
- 2.Qb7#
- 1...Sf5
- 2.Qxb5#
- 1...Qc5
- 2.Qb7#
- 1...d5!
- threat
- 1.Sxe8?
- threat
- 2.Qc7#
- 2.Qxb5#
- 2.Qb7#
- 2.Qa8#
- 2.Qc8#
- 1...Sf5
- 2.Qxb5#
- 1...d5
- 2.Qc7#
- 2.Qxb5#
- 2.Qc8#
- 1...Qb4
- 2.Qc7#
- 2.Qb7#
- 2.Qa8#
- 2.Qc8#
- 1...Qc5
- 2.Qc7#
- 2.Qb7#
- 2.Qa8#
- 2.Qc8#
- 1...Qd6
- 2.Qxd6#
- 2.Qxb5#
- 2.Qb7#
- 2.Qa8#
- 1...Se7
- 2.Qd6#
- 2.Qc7#
- 2.Qxb5#
- 2.Qb7#
- 2.Qa8#
- 1...b4
- 2.Qc7#
- 2.Qb5#
- 2.Qb7#
- 2.Qa8#
- 2.Qc8#
- 1...Qxe8!
- threat
- 1.Bxg3?
- threat
- 2.Qb7#
- 2.Qc8#
- 1...Qxd6
- 2.Qxd6#
- 2.Qb7#
- 1...Bxf7
- 2.Qb7#
- 1...Se7
- 2.Qb7#
- 1...Rf4!
- threat
- 1.Rd1?
- threat
- 2.Qb7#
- 2.Qc8#
- 1...Qxd6
- 2.Rxd6#
- 2.Qxd6#
- 2.Qb7#
- 1...Bxf7
- 2.Qb7#
- 1...Sf5
- 2.Qc8#
- 1...Se7
- 2.Qb7#
- 1...Rd4!
- threat
- 1.Qa8+?
- 1...Kc7
- 2.Sxb5#
- 1...Kxd6!
- 1...Kc7
- 1.Sxc4?
- Keys
- 1.Sf5!
- threat
- 2.Sd4#
- 1...Kc5
- 2.Qxb5#
- 1...Kd5
- 2.Se7#
- 1...Sxf5
- 2.Qxb5#
- 1...Qc5
- 2.Qb7#
- 1...Qd6
- 2.Qxd6#
- 1...Qg7
- 2.Qd6#
- 1...Se2
- 2.Qxb5#
- 1...d5
- 2.Qc8#
- threat
- 1.Sf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 7
- REMOVED MATES = 3
- Sets
- Q(k);SBLOCK,XS(G)::QAB1(I)
- R(c);OGATEB::R(A),XR(c)
- P(f);N_GUARD::R(A),XR(c)
- Tries
- Try
- S(G);XR(c)
- Threat
- DUALS(4)
- Vars
- S(a);::QAB1(I),XP(f)
- Refutation
- P(f);P_SPINP(f),XS(G)
- Try
- S(G);XP(d)
- Threat
- DUALS(2)
- Vars
- B(j);XP(H)::QAB1(I)
- Refutation
- R(e);XS(G)
- Try
- S(G);XP(f)
- Threat
- DUALS(6)
- Refutation
- S(a);
- Try
- S(G);
- Threat
- DUALS(3)
- Vars
- B(j);XP(H)::S(G)
- P(i);::QAR2(I)
- Refutation
- S(a);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- S(a);::QAB1(I),XP(f)
- Q(k);N_SPINR(c)::QAB1(I)
- Refutation
- P(i);
- Try
- S(G);XB(j)
- Threat
- DUALS(5)
- Vars
- S(a);::QAB1(I),XP(f)
- Refutation
- Q(k);XS(G)
- Try
- B(B);XS(a)
- Threat
- DUALS(2)
- Vars
- B(j);XP(H)::QAB1(I)
- S(l);::QAB1(I)
- Refutation
- R(e);
- Try
- R(A);N_PINR(c)
- Threat
- DUALS(2)
- Vars
- B(j);XP(H)::QAB1(I)
- S(a);::QAR2(I)
- S(l);::QAB1(I)
- Refutation
- R(c);
- Try
- Q(I);CHECK
- Vars
- K(g);P-FLIGHT::S(G),XP(f)
- Refutation
- K(g);N_SPINR(c),P-FLIGHT,P_SPINS(a),XS(G)
- Try
- Actual
- S(G);
- Threat
- S(G)
- Vars
- K(g);N_GUARD,P-FLIGHT::QAR1(I),XP(f)
- K(g);N_SPINR(c),S_FLIGHT::R(E)+S(G),DCHECK
- S(a);XS(G)::QAB1(I),XP(f)
- Q(k);N_SPINR(c),SBLOCK::QAB1(I)
- Q(k);N_GUARD::QAR1(I),XQ(k)
- Q(k);N_GUARD::QAR1(I)
- S(a);::QAB1(I),XP(f)
- P(i);SBLOCK::QAR2(I)
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).