MESON Chess Problem Database
Problem Display
PID: 173712 (3R4/2P1npp1/KQb1kP2/1p3p1N/pR3P2/1q1N4/B6b/2r5 w - - 0 1)
Boros, Sandor
Uj Nemezdek, 1926
#2
10 + 11
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qc4
- 2.Sc5#
- 1...Qd5
- 2.Qe3#
- 1...Ra1
- 2.Sc5#
- 1...Rb1
- 2.Sc5#
- 1...Rd1
- 2.Sc5#
- 1...Re1
- 2.Sc5#
- 1...Rf1
- 2.Sc5#
- 1...Rg1
- 2.Sc5#
- 1...Rh1
- 2.Sc5#
- 1...Rc5
- 2.Sxc5#
- 1...Sd5
- 2.c8Q#
- 2.c8B#
- 1...Sg6
- 2.c8Q#
- 2.c8B#
- 1...Sg8
- 2.c8Q#
- 2.c8B#
- 1...gxf6
- 2.Sg7#
- 1...Qc4
- Tries
- 1.Bxb3+?
- 1...Rc4
- 2.Sc5#
- 1...Sd5
- 2.Bxd5#
- 2.Qe3#
- 2.c8Q#
- 2.c8B#
- 1...axb3!
- 1...Rc4
- 1.Qd4?
- threat
- 2.Sxg7#
- 2.Rd6#
- 2.Qe5#
- 2.Qd6#
- 1...Bxf4
- 2.Sdxf4#
- 2.Shxf4#
- 2.Sxg7#
- 1...gxf6
- 2.Sg7#
- 2.Rd6#
- 2.Qxf6#
- 2.Qd6#
- 1...Qd5
- 2.Sxg7#
- 2.Qe3#
- 2.Qe5#
- 1...Re1
- 2.Sc5#
- 2.Sxg7#
- 2.Rd6#
- 2.Qd6#
- 1...Rg1
- 2.Sc5#
- 2.Rd6#
- 2.Qe5#
- 2.Qd6#
- 1...Rc5
- 2.Sxc5#
- 2.Sxg7#
- 2.Rd6#
- 2.Qd6#
- 1...Bd5
- 2.Sxg7#
- 2.Qe5#
- 1...Bd7
- 2.Sxg7#
- 2.Qe5#
- 2.Qxd7#
- 1...Sd5
- 2.Sxg7#
- 2.Qe5#
- 1...Sg6
- 2.Sxg7#
- 2.Rd6#
- 2.Qd6#
- 1...Sc8
- 2.Sxg7#
- 2.Qe5#
- 1...g5
- 2.Sg7#
- 2.Rd6#
- 2.Qe5#
- 2.Qd6#
- 1...g6
- 2.Sg7#
- 2.Rd6#
- 2.Qe5#
- 2.Qd6#
- 1...Bb7+!
- threat
- 1.Qc5?
- threat
- 2.Rd6#
- 2.Qd6#
- 2.Qxe7#
- 2.Qe5#
- 1...Rxc5
- 2.Sxc5#
- 1...Bxf4
- 2.Sdxf4#
- 2.Qxe7#
- 1...gxf6
- 2.Sg7#
- 2.Rd6#
- 2.Qd6#
- 1...Qd5
- 2.Rd6#
- 2.Qe3#
- 2.Qd6#
- 2.Qxe7#
- 1...Re1
- 2.Rd6#
- 2.Qd6#
- 2.Qxe7#
- 1...Bd5
- 2.Rd6#
- 2.Qd6#
- 2.Qxe7#
- 1...Bd7
- 2.Qe5#
- 1...Sd5
- 2.Rd6#
- 2.Qd6#
- 1...Sg6
- 2.Rd6#
- 2.Qd6#
- 1...Sc8
- 2.Qe5#
- 1...Sg8
- 2.Rd6#
- 2.Qd6#
- 2.Qe5#
- 1...Bb7+!
- threat
- 1.Qxc6+?
- 1...Sxc6
- 2.c8Q#
- 2.c8B#
- 1...Rxc6+!
- 1...Sxc6
- 1.fxe7?
- threat
- 2.e8Q#
- 2.e8R#
- 1...Qxa2
- 2.e8Q#
- 2.e8R#
- 1...Bxf4
- 2.e8Q#
- 2.e8R#
- 1...Qc4
- 2.e8Q#
- 2.e8R#
- 1...Qd5
- 2.Qe3#
- 2.e8Q#
- 2.e8R#
- 1...Ra1
- 2.e8Q#
- 2.e8R#
- 1...Rb1
- 2.e8Q#
- 2.e8R#
- 1...Rd1
- 2.e8Q#
- 2.e8R#
- 1...Re1
- 2.e8Q#
- 2.e8R#
- 1...Rf1
- 2.e8Q#
- 2.e8R#
- 1...Rg1
- 2.e8Q#
- 2.e8R#
- 1...Rh1
- 2.e8Q#
- 2.e8R#
- 1...Rc2
- 2.e8Q#
- 2.e8R#
- 1...Rc3
- 2.e8Q#
- 2.e8R#
- 1...Rc4
- 2.e8Q#
- 2.e8R#
- 1...Rc5
- 2.e8Q#
- 2.e8R#
- 1...Bg1
- 2.e8Q#
- 2.e8R#
- 1...Bg3
- 2.e8Q#
- 2.e8R#
- 1...a3
- 2.e8Q#
- 2.e8R#
- 1...g5
- 2.e8Q#
- 2.e8R#
- 1...g6
- 2.e8Q#
- 2.e8R#
- 1...Kxe7!
- threat
- 1.Bxb3+?
- Keys
- 1.Rxb5!
- threat
- 2.Re5#
- 1...Bxf4
- 2.Sdxf4#
- 1...gxf6
- 2.Sg7#
- 1...Qc4
- 2.Sc5#
- 1...Qd5
- 2.Qe3#
- 1...Re1
- 2.Sc5#
- 1...Rc5
- 2.Sxc5#
- 1...Sd5
- 2.c8Q#
- 2.c8B#
- 1...Sg6
- 2.c8Q#
- 2.c8B#
- threat
- 1.Rxb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- Q(c);S_CUTR(a)::S(B)
- Q(c);::QAR(G)
- R(a);N_GUARD::S(B)
- R(a);N_GUARD::S(B),XR(a)
- S(i);N_GUARD,N_SPINQ(c)::P=Q
- S(i);N_GUARD::P=Q
- P(k);SBLOCK,XP(H)::S(E)
- Tries
- Try
- B(A);CHECK,XQ(c)
- Vars
- R(a);P_SPINR(a)::S(B)
- Refutation
- P(d);XB(A)
- Try
- Q(G);N_PINB(g)
- Threat
- DUALS(4)
- Refutation
- B(g);CHECK
- Try
- Q(G);N_PINB(g)
- Threat
- DUALS(4)
- Vars
- R(a);XQ(G)::S(B),XR(a)
- B(g);::QAR1(G)
- S(i);::QAR1(G)
- Refutation
- B(g);CHECK
- Try
- Q(G);CHECK,XB(g)
- Vars
- S(i);XQ(G)::P=Q
- Refutation
- R(a);CHECK,XQ(G)
- Try
- P(H);XS(i)
- Threat
- P=Q
- Vars
- Q(c);N_SPINQ(c),XB(A)::P=Q
- B(b);XP(D)::P=Q
- Q(c);::P=Q
- R(a);::P=Q
- R(a);N_SPINQ(c)::P=Q
- B(b);::P=Q
- P(d);::P=Q
- P(k);::P=Q
- Refutation
- K(h);N_SPINB(g),N_SPINQ(c),P-FLIGHT,XP(H)
- Try
- Actual
- R(C);XP(e)
- Threat
- R1(C)
- Vars
- B(b);XP(D)::S(B),XB(b)
- P(k);SBLOCK,XP(H)::S(E)
- Q(c);P_PINR(C),S_CUTR(a)::S(B)
- Q(c);::QAR(G)
- R(a);N_GUARD::S(B)
- R(a);N_GUARD::S(B),XR(a)
- S(i);N_GUARD,N_SPINQ(c)::P=Q
- S(i);N_GUARD::P=Q
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).