MESON Chess Problem Database
Problem Display
PID: 65676 (4N1B1/8/1pp1NB2/1prRb1PK/1P1rk3/Q7/3nP3/8 w - - 0 1)
Rosenbaum, Aleksandr
The Chess Monthly (Hoffer), 1880
#2
10 + 8
SOLUTION
- SOUND
- Sets
- 1...Kxd5
- 2.Sxc5#
- 1...Kf5
- 2.Sd6#
- 1...Rd3
- 2.Qxd3#
- 1...Rxb4
- 2.Qd3#
- 1...Rdc4
- 2.Qd3#
- 1...Rdxd5
- 2.Bh7#
- 1...Rc1
- 2.Rxe5#
- 1...Rc2
- 2.Rxe5#
- 1...Rc3
- 2.Rxe5#
- 1...Rcc4
- 2.Rxe5#
- 1...Rcxd5
- 2.Bh7#
- 1...Bxf6
- 2.Sxf6#
- 1...Sb1
- 2.Qf3#
- 1...Sf1
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sc4
- 2.Qf3#
- 1...cxd5
- 2.Bh7#
- 1...Kxd5
- Tries
- 1.Rxd4+?
- 1...Kf5
- 2.S6g7#
- 2.S8g7#
- 2.Qh3#
- 1...Bxd4!
- 1...Kf5
- 1.Rxc5?
- threat
- 2.Bh7#
- 2.Rxe5#
- 1...Kf5
- 2.Rxe5#
- 1...Bxf6
- 2.Sxf6#
- 2.Bh7#
- 1...Rd3
- 2.Rxe5#
- 2.Qxd3#
- 1...Sb3
- 2.Rxe5#
- 1...Rd5
- 2.Bh7#
- 1...Rd7
- 2.Rxe5#
- 1...Bh2
- 2.Bh7#
- 1...Bg3
- 2.Bh7#
- 1...Bf4
- 2.Bh7#
- 1...Bd6
- 2.Bh7#
- 1...Bc7
- 2.Bh7#
- 1...Bb8
- 2.Bh7#
- 1...Sf3
- 2.Bh7#
- 2.Qxf3#
- 1...Sc4
- 2.Bh7#
- 2.Qf3#
- 1...bxc5!
- threat
- 1.Qb3?
- threat
- 2.Bh7#
- 1...Kf5
- 2.Sd6#
- 1...Rd3
- 2.Qxd3#
- 1...Rdc4
- 2.Qd3#
- 1...Rc3
- 2.Rxe5#
- 1...Rcc4
- 2.Rxe5#
- 1...Sc4
- 2.Qf3#
- 1...Sxb3!
- threat
- 1.Qd3+?
- 1...Kxd5
- 2.Sxd4#
- 2.Sf4#
- 2.Sxc5#
- 2.S6c7#
- 2.S6g7#
- 2.Sd8#
- 2.Sf8#
- 1...Rxd3!
- 1...Kxd5
- 1.Qe3+?
- 1...Kxd5
- 2.Sxd4#
- 2.Sf4#
- 2.Sxc5#
- 2.S6c7#
- 2.S6g7#
- 2.Sd8#
- 2.Sf8#
- 1...Kf5
- 2.Sxd4#
- 2.S6g7#
- 2.Sd6#
- 2.S8g7#
- 2.Qxe5#
- 1...Kxe3!
- 1...Kxd5
- 1.Qh3?
- 1...Kxd5
- 2.Sxc5#
- 1...Rxb4
- 2.Qd3#
- 1...Rdxd5
- 2.Bh7#
- 1...Rcxd5
- 2.Bh7#
- 1...Bxf6
- 2.Sxf6#
- 1...cxd5
- 2.Bh7#
- 1...Sf3
- 2.Qxf3#
- 1...Rd3
- 2.Qxd3#
- 1...Rdc4
- 2.Qd3#
- 1...Rc1
- 2.Rxe5#
- 1...Rc2
- 2.Rxe5#
- 1...Rc3
- 2.Rxe5#
- 1...Rcc4
- 2.Rxe5#
- 1...Bh2
- 2.Rxd4#
- 1...Bf4
- 2.Rxd4#
- 1...Bd6
- 2.Rxd4#
- 1...Bc7
- 2.Rxd4#
- 1...Bb8
- 2.Rxd4#
- 1...Sb1
- 2.Qf3#
- 1...Sf1
- 2.Qf3#
- 1...Sb3
- 2.Qf3#
- 1...Sc4
- 2.Qf3#
- 1...Bg3!
- 1...Kxd5
- 1.Rxd4+?
- Keys
- 1.Qc3!
- 1...Kxd5
- 2.Sxc5#
- 1...Kf5
- 2.Sd6#
- 1...Rxb4
- 2.Qxe5#
- 2.Qd3#
- 1...Rdxd5
- 2.Bh7#
- 1...Rxc3
- 2.Rxe5#
- 1...Rcxd5
- 2.Bh7#
- 1...Bxf6
- 2.Sxf6#
- 1...cxd5
- 2.Bh7#
- 1...Rd3
- 2.Qxe5#
- 2.Qxd3#
- 1...Rdc4
- 2.Qxe5#
- 2.Qd3#
- 1...Rcc4
- 2.Rxe5#
- 1...Bh2
- 2.Qxd4#
- 1...Bg3
- 2.Qxd4#
- 1...Bf4
- 2.Qxd4#
- 1...Bd6
- 2.Qxd4#
- 1...Bc7
- 2.Qxd4#
- 1...Bb8
- 2.Qxd4#
- 1...Sb1
- 2.Qf3#
- 1...Sf1
- 2.Qf3#
- 1...Sb3
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sc4
- 2.Qf3#
- 1...Kxd5
- 1.Qc3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 5
- Sets
- K(c);S_FLIGHT,XR(D)::B(J)+S(G),XR(e)
- K(c);P_SPINB(f),S_FLIGHT::S(I)
- R(b);N_GUARD::QAB1(B),XR(b)
- R(b);N_GUARD,XP(C)::QAB1(B)
- R(b);N_GUARD::QAB1(B)
- R(b);SBLOCK,XR(D)::B(J)
- R(e);N_GUARD::R1(D),XB(f)
- R(e);SBLOCK,XR(D)::B(J)
- B(f);XB(H)::S(I),XB(f)
- S(a);N_GUARD::QAB1(B)
- S(a);N_GUARD::QAB1(B),XS(a)
- P(h);SBLOCK,XR(D)::B(J)
- Tries
- Try
- R(D);CHECK,XR(b)
- Refutation
- B(f);P_PINP(E),XR(D)
- Try
- R(D);XR(e)
- Threat
- DUALS(2)
- Vars
- K(c);P_SPINB(f),S_FLIGHT::R1(D),XB(f)
- S(a);::R1(D),XB(f)
- R(b);::B(J)
- R(b);::R1(D),XB(f)
- B(f);::B(J)
- Refutation
- P(g);XR(D)
- Try
- Q(B);
- Threat
- B(J)
- Vars
- K(c);P_SPINB(f),S_FLIGHT::S(I)
- R(b);N_GUARD::QAB1(B),XR(b)
- R(b);N_GUARD::QAB1(B)
- R(e);N_GUARD::R1(D),XB(f)
- S(a);N_GUARD::QAB1(B)
- Refutation
- S(a);XQ(B)
- Try
- Q(B);CHECK
- Refutation
- R(b);XQ(B)
- Try
- Q(B);CHECK
- Refutation
- K(c);P-FLIGHT,XQ(B)
- Try
- Q(B);
- Vars
- K(c);S_FLIGHT,XR(D)::B(J)+S(G),XR(e)
- R(b);N_GUARD,XP(C)::QAB1(B)
- R(b);SBLOCK,XR(D)::B(J)
- R(e);SBLOCK,XR(D)::B(J)
- B(f);XB(H)::S(I),XB(f)
- P(h);SBLOCK,XR(D)::B(J)
- S(a);N_GUARD::QAB1(B),XS(a)
- R(b);N_GUARD::QAB1(B),XR(b)
- R(b);N_GUARD::QAB1(B)
- R(e);N_GUARD::R1(D),XB(f)
- B(f);N_GUARD::R1(D),XR(b)
- S(a);N_GUARD::QAB1(B)
- Refutation
- B(f);
- Try
- Actual
- Q(B);
- Vars
- K(c);S_FLIGHT,XR(D)::B(J)+S(G),XR(e)
- K(c);P_SPINB(f),S_FLIGHT::S(I)
- R(b);SBLOCK,XR(D)::B(J)
- R(e);N_GUARD,XQ(B)::R1(D),XB(f)
- R(e);SBLOCK,XR(D)::B(J)
- B(f);XB(H)::S(I),XB(f)
- P(h);SBLOCK,XR(D)::B(J)
- R(e);N_GUARD::R1(D),XB(f)
- B(f);N_GUARD::QAR1(B),XR(b)
- S(a);N_GUARD::QAB1(B)
- S(a);N_GUARD::QAB1(B),XS(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).