MESON Chess Problem Database
Problem Display
PID: 168934 (1Q2n3/p2NPK2/R1Pp1PN1/3k4/b4R1n/BP2PP2/6pq/3rb3 w - - 0 1)
Riva, Rodolfo
SuperProblem, 2014
#2
13 + 10
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qxf4
- 2.Sxf4#
- 1...Ra1
- 2.Rd4#
- 1...Rb1
- 2.Rd4#
- 1...Rc1
- 2.Rd4#
- 1...Rd4
- 2.Rxd4#
- 1...Bd2
- 2.Rd4#
- 1...Bxb3
- 2.Qxb3#
- 2.Qb5#
- 1...Bb5
- 2.Qxb5#
- 1...Sxf6
- 2.Sxf6#
- 2.Qxd6#
- 1...Sg7
- 2.Qxd6#
- 1...Qxf4
- Tries
- 1.Rfxa4?
- threat
- 2.Qb5#
- 2.e4#
- 1...Sxf6
- 2.Sxf6#
- 2.Qb5#
- 1...Qf4
- 2.Sxf4#
- 2.Qb5#
- 1...Qe5
- 2.Qb5#
- 1...Rc1
- 2.Rd4#
- 2.e4#
- 1...Rd4
- 2.Rxd4#
- 2.Qb5#
- 1...Sc7
- 2.e4#
- 1...Bb4!
- threat
- 1.Rc4?
- threat
- 2.e4#
- 1...Bxb3
- 2.Qb5#
- 1...Sxf6
- 2.Sxf6#
- 1...Qf4
- 2.Sxf4#
- 1...Rd4
- 2.Rxd4#
- 1...Qe5!
- threat
- 1.Rf5+?
- 1...Qe5
- 2.Sf4#
- 1...Sxf5!
- 1...Qe5
- 1.Qxa7?
- threat
- 2.e4#
- 1...Qxf4
- 2.Sxf4#
- 1...Sxf6
- 2.Sxf6#
- 1...Rd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Bxb3!
- threat
- 1.Qb4?
- threat
- 2.Qc4#
- 2.Qe4#
- 2.e4#
- 1...Qxf4
- 2.Sxf4#
- 1...Bxb3
- 2.Qxb3#
- 2.Qe4#
- 2.Qb5#
- 2.e4#
- 1...Sxf6
- 2.Sxf6#
- 2.Qxd6#
- 2.Qc4#
- 1...Rc1
- 2.Rd4#
- 2.Qd4#
- 2.Qe4#
- 2.e4#
- 1...Rd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Bb5
- 2.Qe4#
- 2.Qxb5#
- 2.e4#
- 1...Bxb4!
- threat
- 1.Qb6?
- threat
- 2.e4#
- 1...Qxf4
- 2.Sxf4#
- 1...Bxb3
- 2.Qxb3#
- 2.Qb5#
- 1...Sxf6
- 2.Sxf6#
- 1...Rd4
- 2.Rxd4#
- 2.Qxd4#
- 1...axb6!
- threat
- 1.bxa4?
- threat
- 2.Qb3#
- 2.Qb5#
- 1...Qxf4
- 2.Qb5#
- 1...Rd4
- 2.Rxd4#
- 2.Qb5#
- 1...Rb1
- 2.Rd4#
- 1...Rc1
- 2.Rd4#
- 1...Rd3
- 2.Qb5#
- 1...Sc7
- 2.Qb3#
- 1...Bb4!
- threat
- 1.Rfxa4?
- Keys
- 1.Bc5!
- threat
- 2.e4#
- 1...Qxf4
- 2.Sxf4#
- 1...Bxb3
- 2.Qxb3#
- 1...Sxf6
- 2.Qxd6#
- 1...dxc5
- 2.Qe5#
- 1...Rd4
- 2.Rxd4#
- threat
- 1.Bc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 6
- Sets
- Q(d);P_PINP(H),XR(E)::S(I),XQ(d)
- R(a);N_GUARD::R1(E)
- R(a);N_GUARD::R1(E),XR(a)
- B(b);S_CUTR(a)::R1(E)
- B(e);N_GUARD::QAR2(M),XB(e)
- S(j);N_GUARD::QAR1(M),XP(h)
- Tries
- Try
- R(E);XB(e)
- Threat
- DUALS(2)
- Vars
- Q(d);::QAR2(M)
- S(j);::P(C)
- Refutation
- B(b);
- Try
- R(E);
- Threat
- P(C)
- Vars
- B(e);N_GUARD,XP(B)::QAR2(M)
- S(j);XP(H)::S(J),XS(j)
- Q(d);N_GUARD,P_PINP(H)::S(I),XQ(d)
- R(a);N_GUARD::R1(E),XR(a)
- Refutation
- Q(d);
- Try
- R(E);CHECK
- Vars
- Q(d);P_SPINQ(d)::S(I)
- Refutation
- S(f);XR(E)
- Try
- Q(M);XP(i)
- Threat
- P(C)
- Vars
- Q(d);P_PINP(H),XR(E)::S(I),XQ(d)
- S(j);XP(H)::S(J),XS(j)
- Refutation
- B(e);XP(B)
- Try
- Q(M);
- Threat
- DUALS(3)
- Vars
- Q(d);P_PINP(H),XR(E)::S(I),XQ(d)
- Refutation
- B(b);XQ(M)
- Try
- Q(M);
- Threat
- P(C)
- Vars
- Q(d);P_PINP(H),XR(E)::S(I),XQ(d)
- S(j);XP(H)::S(J),XS(j)
- Refutation
- P(i);XQ(M)
- Try
- P(B);XB(e)
- Threat
- DUALS(2)
- Vars
- Q(d);P_PINP(H),XR(E)::QAR2(M)
- R(a);N_GUARD::R1(E)
- R(a);::QAR2(M)
- S(j);::QAB(M)
- Refutation
- B(b);
- Try
- Actual
- B(A);
- Threat
- P(C)
- Vars
- Q(d);P_PINP(H),XR(E)::S(I),XQ(d)
- B(e);OGATE,XP(B)::QAB(M),XB(e)
- S(j);N_GUARD,XP(H)::QAR1(M),XP(h)
- P(h);OGATE,XB(A)::QAR1(M)
- R(a);N_GUARD::R1(E),XR(a)
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).