MESON Chess Problem Database
Problem Display
PID: 145418 (4R3/1qp5/3p2p1/3n1n2/N1p2BQ1/p1Pk2pN/r3RP2/1b2K3 w - - 0 1)
Dyachuk, Vasyl Vasilovich
1st Prize, Sachsische Zeitung, 2007
#2
9 + 12
| 23 | Die Schwalbe | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Rd2#
- 1...Rd2
- 2.Rxd2#
- 1...Rxe2+
- 2.Qxe2#
- 1...Bc2
- 2.Rd2#
- 1...Sxf4
- 2.Sxf4#
- 1...gxf2+
- 2.Sxf2#
- 1...g5
- 2.Qxf5#
- 1...Ra1
- Tries
- 1.Bc1?
- threat
- 2.Qe4#
- 1...Rxe2+
- 2.Qxe2#
- 1...gxf2+
- 2.Sxf2#
- 1...Sde3
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sb6
- 2.Sf4#
- 1...Sf6
- 2.Sf4#
- 1...Sde7
- 2.Sf4#
- 1...Sxc3!
- threat
- 1.Be3?
- threat
- 2.Qe4#
- 1...Rxe2+
- 2.Qxe2#
- 1...gxf2+
- 2.Sxf2#
- 1...Sxc3
- 2.Sf4#
- 1...Sdxe3
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sb6
- 2.Sf4#
- 1...Sf6
- 2.Sf4#
- 1...Sfe7
- 2.Qd4#
- 1...Sde7!
- threat
- 1.Bxg3?
- threat
- 2.Qe4#
- 1...Rxe2+
- 2.Qxe2#
- 1...Sxg3
- 2.Qd4#
- 1...Sde3
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sb6
- 2.Sf4#
- 1...Sf6
- 2.Sf4#
- 1...Sde7
- 2.Sf4#
- 1...Sxc3!
- threat
- 1.Be5?
- threat
- 2.Qe4#
- 1...Rxe2+
- 2.Qxe2#
- 1...gxf2+
- 2.Sxf2#
- 1...Sxc3
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sb6
- 2.Sf4#
- 1...Sf6
- 2.Sf4#
- 1...Sde7
- 2.Sf4#
- 1...Sfe3
- 2.Qd4#
- 1...Sde3!
- threat
- 1.Bg5?
- threat
- 2.Qe4#
- 1...Rxe2+
- 2.Qxe2#
- 1...gxf2+
- 2.Sxf2#
- 1...Sde3
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sb6
- 2.Sf4#
- 1...Sf6
- 2.Sf4#
- 1...Sde7
- 2.Sf4#
- 1...Sxc3!
- threat
- 1.Bh6?
- threat
- 2.Qe4#
- 1...Rxe2+
- 2.Qxe2#
- 1...gxf2+
- 2.Sxf2#
- 1...Sde3
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sb6
- 2.Sf4#
- 1...Sf6
- 2.Sf4#
- 1...Sde7
- 2.Sf4#
- 1...Sxc3!
- threat
- 1.Rxa2?
- threat
- 2.Rd2#
- 2.Qd1#
- 2.Qe2#
- 1...gxf2+
- 2.Sxf2#
- 1...Bxa2
- 2.Qd1#
- 2.Qe2#
- 1...Sxc3
- 2.Rd2#
- 1...Sxf4
- 2.Sxf4#
- 2.Rd2#
- 2.Qd1#
- 1...Sde7
- 2.Qe2#
- 1...Sfe7
- 2.Qe2#
- 1...Qb3
- 2.Rd2#
- 2.Qe2#
- 1...Bc2
- 2.Qe2#
- 1...Sde3
- 2.Rd2#
- 2.Qe2#
- 1...Sfe3
- 2.Rd2#
- 2.Qe2#
- 1...Sd4
- 2.Rd2#
- 2.Qd1#
- 1...Qb2!
- threat
- 1.Qf3+?
- 1...Sfe3
- 2.Qe4#
- 1...Sde3!
- 1...Sfe3
- 1.Bc1?
- Keys
- 1.Bxd6!
- threat
- 2.Qe4#
- 1...Rxe2+
- 2.Qxe2#
- 1...gxf2+
- 2.Sxf2#
- 1...Sxc3
- 2.Sc5#
- 1...Sxd6
- 2.Qd4#
- 1...Sde3
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sb6
- 2.Sf4#
- 1...Sf6
- 2.Sf4#
- 1...Sde7
- 2.Sf4#
- threat
- 1.Bxd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 4
- Sets
- R(b);N_GUARD::R1(B)
- R(b);N_GUARD::R1(B),XR(b)
- R(b);CHECK,OGATE,XR(B)::QAB1(H),XR(b)
- B(a);S_CUTR(b)::R1(B)
- S(g);XB(G)::S(E),XS(g)
- P(e);CHECK,XP(C)::S(E),XP(e)
- P(j);N_GUARD::QAB(H),XS(h)
- Tries
- Try
- B(G);
- Threat
- QAB1(H)
- Vars
- R(b);CHECK,OGATE,XR(B)::QAB1(H),XR(b)
- P(e);CHECK,XP(C)::S(E),XP(e)
- S(g);N_GUARD::S(E)
- S(g);N_GUARD::S(E),XS(g)
- Refutation
- S(g);XP(D)
- Try
- B(G);
- Threat
- QAB1(H)
- Vars
- R(b);CHECK,OGATE,XR(B)::QAB1(H),XR(b)
- P(e);CHECK,XP(C)::S(E),XP(e)
- S(g);N_GUARD,XP(D)::S(E)
- S(g);N_GUARD,XB(G)::S(E)
- S(g);N_GUARD::S(E)
- S(g);N_GUARD::S(E),XS(g)
- S(h);N_GUARD::QAR1(H)
- Refutation
- S(g);
- Try
- B(G);XP(e)
- Threat
- QAB1(H)
- Vars
- R(b);CHECK,OGATE,XR(B)::QAB1(H),XR(b)
- S(h);N_GUARD,XB(G)::QAR1(H)
- S(g);N_GUARD::S(E)
- S(g);N_GUARD::S(E),XS(g)
- Refutation
- S(g);XP(D)
- Try
- B(G);
- Threat
- QAB1(H)
- Vars
- R(b);CHECK,OGATE,XR(B)::QAB1(H),XR(b)
- P(e);CHECK,XP(C)::S(E),XP(e)
- S(g);N_GUARD,XP(D)::S(E)
- S(g);N_GUARD::S(E)
- S(g);N_GUARD::S(E),XS(g)
- S(h);N_GUARD::QAR1(H)
- Refutation
- S(g);
- Try
- B(G);
- Threat
- QAB1(H)
- Vars
- R(b);CHECK,OGATE,XR(B)::QAB1(H),XR(b)
- P(e);CHECK,XP(C)::S(E),XP(e)
- S(g);N_GUARD::S(E)
- S(g);N_GUARD::S(E),XS(g)
- Refutation
- S(g);XP(D)
- Try
- B(G);
- Threat
- QAB1(H)
- Vars
- R(b);CHECK,OGATE,XR(B)::QAB1(H),XR(b)
- P(e);CHECK,XP(C)::S(E),XP(e)
- S(g);N_GUARD::S(E)
- S(g);N_GUARD::S(E),XS(g)
- Refutation
- S(g);XP(D)
- Try
- R(B);XR(b)
- Threat
- DUALS(3)
- Vars
- P(e);CHECK,XP(C)::S(E),XP(e)
- S(g);XP(D)::R1(B)
- S(g);::QAB1(H)
- S(h);::QAB1(H)
- B(a);::QAB1(H)
- Refutation
- Q(k);
- Try
- Q(H);CHECK
- Vars
- S(h);P_SPINS(h)::QAB1(H)
- Refutation
- S(g);P_SPINS(g)
- Try
- Actual
- B(G);XP(i)
- Threat
- QAB1(H)
- Vars
- R(b);CHECK,OGATE,XR(B)::QAB1(H),XR(b)
- P(e);CHECK,XP(C)::S(E),XP(e)
- S(g);SBLOCK,XP(D)::S(F)
- S(h);N_GUARD,XB(G)::QAR1(H)
- S(g);N_GUARD::S(E)
- S(g);N_GUARD::S(E),XS(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).