MESON Chess Problem Database
Problem Display
PID: 60733 (4r3/1p3p1b/1K1P1P1p/PQ1R4/r3k2N/1R3pPN/ppP2n1q/6Bn w - - 0 1)
Dyachuk, Vasyl Vasilovich
3rd Prize, Mat 64, 2000
#2
12 + 13
SOLUTION
- SOUND
- Sets
- 1...Ra3
- 2.Qc4#
- 1...Rc4
- 2.Qxc4#
- 1...Rxa5
- 2.Qc4#
- 1...Sd1
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 2.cxd3#
- 1...Sxh3
- 2.Re3#
- 2.Qd3#
- 1...Sg4
- 2.Qd3#
- 1...h5
- 2.Sg5#
- 1...Ra3
- Tries
- 1.Sf4?
- threat
- 2.Qxa4#
- 2.Qxe8#
- 1...Qxg3
- 2.Qxa4#
- 1...Rxa5
- 2.Qc4#
- 2.Qxe8#
- 2.Qb4#
- 1...Sxg3
- 2.Qxa4#
- 1...a1Q
- 2.Qxe8#
- 1...a1R
- 2.Qxe8#
- 1...Qh3
- 2.Qxa4#
- 1...Ra3
- 2.Qc4#
- 2.Qxe8#
- 2.Qb4#
- 1...Rb4
- 2.Qxb4#
- 1...Rc4
- 2.Qxc4#
- 2.Qxe8#
- 1...Rd4
- 2.Qxe8#
- 1...Re5
- 2.Qxa4#
- 1...Re6
- 2.Qxa4#
- 1...Re7
- 2.Qxa4#
- 1...Ra8
- 2.Qxa4#
- 1...Rb8
- 2.Qxa4#
- 1...Rd8
- 2.Qxa4#
- 1...Rf8
- 2.Qxa4#
- 1...Rg8
- 2.Qxa4#
- 1...Rh8
- 2.Qxa4#
- 1...Bf5
- 2.Qxa4#
- 1...Sd3
- 2.Qxd3#
- 2.cxd3#
- 1...Sg4
- 2.Qd3#
- 2.Qxa4#
- 1...Rc8!
- threat
- 1.Sxf3?
- threat
- 2.Sd2#
- 1...Sxh3
- 2.Re3#
- 2.Qd3#
- 1...Re5
- 2.Rxe5#
- 1...Sd3
- 2.Qxd3#
- 1...Rd4
- 2.Rxd4#
- 1...Sd1
- 2.Qd3#
- 1...Sg4
- 2.Qd3#
- 1...b1S!
- threat
- 1.Sf5?
- threat
- 2.Re3#
- 1...Re5
- 2.Rxe5#
- 1...Ra3
- 2.Rb4#
- 2.Rd4#
- 2.Qc4#
- 1...Sd1
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 2.cxd3#
- 1...Sg4
- 2.Qd3#
- 1...Bxf5!
- threat
- 1.Re5+?
- 1...Kd4
- 2.Sxf3#
- 2.Qc5#
- 2.Qd5#
- 2.c3#
- 1...Rxe5!
- 1...Kd4
- 1.Rf5?
- threat
- 2.Rf4#
- 2.Qxa4#
- 2.Qd5#
- 1...Kd4
- 2.Qd3#
- 2.Qxa4#
- 2.Qd5#
- 1...Qxg3
- 2.Qxa4#
- 2.Qd5#
- 1...Rxa5
- 2.Rf4#
- 2.Qc4#
- 2.Qb4#
- 1...Sxh3
- 2.Qd3#
- 2.Qxa4#
- 2.Qxe8#
- 2.Qd5#
- 1...a1Q
- 2.Rf4#
- 2.Qd5#
- 1...a1R
- 2.Rf4#
- 2.Qd5#
- 1...Ra3
- 2.Rf4#
- 2.Qc4#
- 2.Qb4#
- 2.Qd5#
- 1...Rb4
- 2.Rf4#
- 2.Qxb4#
- 1...Rc4
- 2.Rf4#
- 2.Qxc4#
- 2.Qd5#
- 1...Rd4
- 2.Rf4#
- 2.Qxe8#
- 1...Re5
- 2.Rf4#
- 2.Qxe5#
- 1...Rc8
- 2.Rf4#
- 2.Qd5#
- 2.Qe5#
- 1...Sd3
- 2.Qxd3#
- 2.Qd5#
- 2.cxd3#
- 1...Bxf5!
- threat
- 1.Rh5?
- threat
- 2.Qxa4#
- 2.Qd5#
- 1...Kd4
- 2.Qxa4#
- 2.Qd5#
- 1...Rxa5
- 2.Qc4#
- 2.Qb4#
- 1...a1Q
- 2.Qd5#
- 1...a1R
- 2.Qd5#
- 1...Ra3
- 2.Qc4#
- 2.Qb4#
- 2.Qd5#
- 1...Rb4
- 2.Qxb4#
- 1...Rc4
- 2.Qxc4#
- 2.Qd5#
- 1...Rd4
- 2.Qxe8#
- 1...Re5
- 2.Qxe5#
- 1...Rc8
- 2.Qd5#
- 2.Qe5#
- 1...Sd3
- 2.Qxd3#
- 2.Qd5#
- 2.cxd3#
- 1...Bf5!
- threat
- 1.Sf4?
- Keys
- 1.Rdd3!
- threat
- 2.Qxe8#
- 2.Qd5#
- 1...Qxg3
- 2.Qd5#
- 1...Qxh3
- 2.Qd5#
- 1...Rxa5
- 2.Rb4#
- 1...Sxd3
- 2.cxd3#
- 1...Rb4
- 2.Rxb4#
- 1...Rd4
- 2.Re3#
- 1...Re5
- 2.Qxa4#
- 1...Re6
- 2.Qd5#
- 1...Re7
- 2.Qd5#
- 1...Ra8
- 2.Qd5#
- 1...Rb8
- 2.Qd5#
- 1...Rc8
- 2.Qd5#
- 1...Rd8
- 2.Qd5#
- 1...Rf8
- 2.Qd5#
- 1...Rg8
- 2.Qd5#
- 1...Rh8
- 2.Qd5#
- 1...Bf5
- 2.Qd5#
- 2.Qxf5#
- 1...Sg4
- 2.Qd5#
- threat
- 1.Rdd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 15
- REMOVED MATES = 4
- Sets
- R(g);N_GUARD::QAR2(H)
- R(g);N_GUARD::QAR2(H),XR(g)
- R(g);N_GUARD,XP(G)::QAR2(H)
- S(d);N_GUARD::QAB1(H)
- P(i);N_GUARD::S(E)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(e);XP(D)::QAR(H),XR(g)
- S(a);XP(D)::QAR(H),XR(g)
- P(b);::QAR(H),XR(m)
- Q(e);::QAR(H),XR(g)
- R(g);N_GUARD,P_PINQ(H)::QAR(H),XR(g)
- R(g);::QAR(H),XR(m)
- R(m);::QAR(H),XR(g)
- R(m);P_PINP(K)::QAR(H),XR(g)
- B(l);::QAR(H),XR(g)
- Refutation
- R(m);
- Try
- S(F);XP(f)
- Threat
- S(F)
- Vars
- R(m);N_GUARD::R1(I),XR(m)
- S(d);N_GUARD::QAB1(H),XS(d)
- R(g);N_GUARD::R1(I),XR(g)
- S(d);N_GUARD::QAB1(H)
- Refutation
- P(c);
- Try
- S(F);
- Threat
- R1(C)
- Vars
- R(m);N_GUARD::R1(I),XR(m)
- S(d);N_GUARD::QAB1(H)
- Refutation
- B(l);XS(F)
- Try
- R(I);CHECK
- Refutation
- R(m);XR(I)
- Try
- R(I);
- Threat
- DUALS(3)
- Refutation
- B(l);XR(I)
- Try
- R(I);
- Threat
- DUALS(2)
- Vars
- P(b);::QAB1(H)
- R(g);N_GUARD,P_PINQ(H)::QAR(H),XR(g)
- R(g);SBLOCK::QAR(H),XR(m)
- R(m);N_GUARD::QAR1(H),XR(m)
- Refutation
- B(l);
- Try
- Actual
- R(I);
- Threat
- DUALS(2)
- Vars
- Q(e);XP(D)::QAB1(H)
- Q(e);XS(E)::QAB1(H)
- R(g);N_GUARD,XP(G)::R(C)
- S(d);OGATE,XR(I)::P(B),XS(d)
- R(g);N_GUARD,P_PINQ(H)::R(C),XR(g)
- R(g);SBLOCK::R1(I)
- R(m);SBLOCK::QAR(H),XR(g)
- R(m);P_PINP(K)::QAB1(H)
- R(m);::QAB1(H)
- S(d);::QAB1(H)
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).