MESON Chess Problem Database
Problem Display
PID: 259521 (3K2n1/4Bp1r/b1Bp4/r3k1N1/4p3/1QP3R1/n4R2/2N5 w - - 0 1)
Uris, Miguel
Variantim, 2022
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Ra3
- 2.Qd5#
- 1...Ra4
- 2.Qd5#
- 1...Rd5
- 2.Qxd5#
- 1...Rh1
- 2.Sxf7#
- 1...Rh2
- 2.Sxf7#
- 1...Rh3
- 2.Sxf7#
- 1...Rh4
- 2.Sxf7#
- 1...Rh5
- 2.Sxf7#
- 1...Rh6
- 2.Sxf7#
- 1...Rh8
- 2.Sxf7#
- 1...Bb5
- 2.Qd5#
- 1...Sxc3
- 2.Qxc3#
- 1...Sf6
- 2.Bxf6#
- 1...Sh6
- 2.Bf6#
- 1...e3
- 2.Rxe3#
- 1...d5
- 2.Qb8#
- 1...f5
- 2.Qe6#
- 1...f6
- 2.Qe6#
- 1...Ra3
- Tries
- 1.Kc7?
- threat
- 2.Bxd6#
- 1...Sxc3
- 2.Qxc3#
- 1...Rd5
- 2.Qxd5#
- 1...Rh6
- 2.Sxf7#
- 1...d5
- 2.Bd6#
- 1...f5
- 2.Qe6#
- 1...f6
- 2.Qe6#
- 1...Sxe7!
- threat
- 1.Sd3+?
- 1...exd3
- 2.Re3#
- 1...Bxd3!
- 1...exd3
- 1.Bxe4?
- threat
- 2.Rf5#
- 1...Sxc3
- 2.Qxc3#
- 1...Bc8
- 2.Sd3#
- 1...Sh6
- 2.Bf6#
- 1...f5
- 2.Rxf5#
- 2.Qe6#
- 1...Sxe7!
- threat
- 1.Rg4?
- threat
- 2.Rxe4#
- 1...Sxc3
- 2.Qxc3#
- 1...Ra4
- 2.Qd5#
- 1...Rh4
- 2.Sxf7#
- 1...Sf6
- 2.Bxf6#
- 1...e3
- 2.Re4#
- 1...d5
- 2.Qb8#
- 1...f5
- 2.Qe6#
- 1...Bd3!
- threat
- 1.Qd1?
- threat
- 2.Bxd6#
- 2.Qd4#
- 2.Qxd6#
- 1...Sxc3
- 2.Bxd6#
- 2.Qxd6#
- 1...Sxe7
- 2.Qd4#
- 1...Ra4
- 2.Bxd6#
- 2.Qd5#
- 2.Qxd6#
- 1...Rd5
- 2.Qxd5#
- 1...Rh6
- 2.Qd4#
- 1...d5
- 2.Qd4#
- 1...f5
- 2.Qd4#
- 2.Qxd6#
- 1...Bd3!
- threat
- 1.Qc4?
- threat
- 2.Qd4#
- 2.Qxe4#
- 1...Sxc3
- 2.Qxc3#
- 1...Ra4
- 2.Qd5#
- 1...Rd5
- 2.Qxd5#
- 2.Qxe4#
- 1...Rh4
- 2.Sxf7#
- 2.Qd4#
- 1...Sf6
- 2.Bxf6#
- 2.Qd4#
- 1...e3
- 2.Sd3#
- 2.Rxe3#
- 2.Qd4#
- 2.Qe4#
- 2.Qf4#
- 1...d5
- 2.Qd4#
- 1...f5
- 2.Qe6#
- 2.Qd4#
- 1...Bxc4!
- threat
- 1.Qb4?
- threat
- 2.Bxd6#
- 2.Qxd6#
- 2.Qd4#
- 2.Qxe4#
- 1...Sxc3
- 2.Bxd6#
- 2.Qxc3#
- 2.Qxd6#
- 1...Sxe7
- 2.Qd4#
- 2.Qxe4#
- 1...Ra4
- 2.Bxd6#
- 2.Qxd6#
- 1...Rc5
- 2.Qd4#
- 2.Qxe4#
- 1...Rd5
- 2.Qxe4#
- 1...Rh4
- 2.Bxd6#
- 2.Qxd6#
- 2.Qd4#
- 1...Rh6
- 2.Qd4#
- 2.Qxe4#
- 1...Bd3
- 2.Bxd6#
- 2.Qxd6#
- 2.Qd4#
- 1...Bc4
- 2.Bxd6#
- 2.Qxd6#
- 1...Sf6
- 2.Bxd6#
- 2.Bxf6#
- 2.Qxd6#
- 2.Qd4#
- 1...e3
- 2.Bxd6#
- 2.Rxe3#
- 2.Qxd6#
- 2.Qd4#
- 2.Qe4#
- 2.Qf4#
- 1...d5
- 2.Bd6#
- 2.Qd6#
- 2.Qd4#
- 2.Qb8#
- 1...f5
- 2.Qxd6#
- 2.Qd4#
- 1...Sxb4!
- threat
- 1.Kc7?
- Keys
- 1.Re3!
- threat
- 2.Rxe4#
- 1...Sxc3
- 2.Qxc3#
- 1...Ra4
- 2.Qd5#
- 1...Rh4
- 2.Sxf7#
- 1...Bd3
- 2.Sxd3#
- 1...Sf6
- 2.Bxf6#
- 1...d5
- 2.Qb8#
- 1...f5
- 2.Qe6#
- threat
- 1.Re3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 12
- Sets
- R(c);N_GUARD::QAR1(C)
- R(c);N_GUARD::QAR1(C),XR(c)
- R(h);N_GUARD::S(F),XP(g)
- B(e);S_CUTR(c)::QAR1(C)
- S(a);OGATE,XP(D)::QAB(C),XS(a)
- S(i);N_GUARD::B(H),XS(i)
- S(i);N_GUARD::B(H)
- P(b);OGATEB::R(E),XP(b)
- P(f);OGATEB::QAB(C)
- P(g);N_GUARD::QAR1(C)
- Tries
- Try
- K(I);S_FLIGHT
- Threat
- B(H),XP(f)
- Vars
- S(a);OGATE,XP(D)::QAB(C),XS(a)
- R(c);N_GUARD::QAR1(C),XR(c)
- R(h);N_GUARD::S(F),XP(g)
- P(f);::B(H)
- P(g);N_GUARD,P_PINB(H)::QAR1(C)
- Refutation
- S(i);XB(H)
- Try
- S(A);CHECK
- Vars
- P(b);S_CUTB(e),XS(A)::R(E)
- Refutation
- B(e);XS(A)
- Try
- B(G);XP(b)
- Threat
- R1(B)
- Vars
- S(a);OGATE,XP(D)::QAB(C),XS(a)
- B(e);N_GUARD::S(A)
- S(i);N_GUARD::B(H)
- Refutation
- S(i);XB(H)
- Try
- R(E);
- Threat
- R1(E),XP(b)
- Vars
- S(a);OGATE,XP(D)::QAB(C),XS(a)
- R(c);N_GUARD::QAR1(C)
- R(h);N_GUARD::S(F),XP(g)
- S(i);N_GUARD::B(H),XS(i)
- P(b);::R1(E)
- P(f);OGATEB::QAB(C)
- P(g);N_GUARD::QAR1(C)
- Refutation
- B(e);
- Try
- Q(C);
- Threat
- DUALS(3)
- Vars
- S(i);XB(H)::QAB1(C)
- R(c);N_GUARD::QAR1(C),XR(c)
- R(h);::QAB1(C)
- P(f);::QAB1(C)
- Refutation
- B(e);
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- S(a);OGATE,XP(D)::QAB(C),XS(a)
- R(c);N_GUARD::QAR1(C)
- P(f);::QAB1(C)
- Refutation
- B(e);XQ(C)
- Try
- Q(C);
- Threat
- DUALS(4)
- Vars
- R(c);::QAR1(C),XP(b)
- Refutation
- S(a);XQ(C)
- Try
- Actual
- R(E);P_PINP(b)
- Threat
- R1(E),XP(b)
- Vars
- S(a);OGATE,XP(D)::QAB(C),XS(a)
- R(c);N_GUARD::QAR1(C)
- R(h);N_GUARD::S(F),XP(g)
- B(e);N_GUARD::S(A),XB(e)
- S(i);N_GUARD::B(H),XS(i)
- P(f);OGATEB::QAB(C)
- P(g);N_GUARD::QAR1(C)
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).