MESON Chess Problem Database
Problem Display
PID: 66826 (B1Nn4/1r2R2p/1pk3bR/1pppp3/1B3b2/5Np1/1pQ3P1/1K6 w - - 0 1)
Neumann, Itzhak
Magyar Sakkvilag, 1931
#2
9 + 13
| 5828 | My Selected Chess Problems (Neumann) | 1968 |
| 3713 | Snap | 2007 |
SOLUTION
- SOUND
- Sets
- 1...Bc1
- 2.Sxe5#
- 1...Bd2
- 2.Sxe5#
- 1...Be3
- 2.Sxe5#
- 1...Bg5
- 2.Sxe5#
- 1...Bxh6
- 2.Sxe5#
- 1...Se6
- 2.Bxb7#
- 1...Sf7
- 2.Bxb7#
- 1...c4
- 2.Sa7#
- 1...d4
- 2.Qe4#
- 1...e4
- 2.Sd4#
- 1...Bc1
- Tries
- 1.Kxb2?
- 1...Bxh6
- 2.Sxe5#
- 1...d4
- 2.Qe4#
- 1...Bd2
- 2.Sxe5#
- 1...Be3
- 2.Sxe5#
- 1...Bg5
- 2.Sxe5#
- 1...Se6
- 2.Bxb7#
- 1...Sf7
- 2.Bxb7#
- 1...c4
- 2.Sa7#
- 1...e4
- 2.Sd4#
- 1...Bc1+!
- 1...Bxh6
- 1.Ba3?
- 1...Bxh6
- 2.Sxe5#
- 1...d4
- 2.Qe4#
- 1...Bc1
- 2.Sxe5#
- 1...Bd2
- 2.Sxe5#
- 1...Be3
- 2.Sxe5#
- 1...Bg5
- 2.Sxe5#
- 1...Se6
- 2.Bxb7#
- 1...Sf7
- 2.Bxb7#
- 1...c4
- 2.Sa7#
- 1...e4
- 2.Sd4#
- 1...b4!
- 1...Bxh6
- 1.Rxg6+?
- 1...Se6
- 2.Bxb7#
- 2.Rgxe6#
- 1...hxg6!
- 1...Se6
- 1.Rxb7?
- 1...Bxh6
- 2.Sxe5#
- 1...d4
- 2.Qe4#
- 1...Bc1
- 2.Sxe5#
- 1...Bd2
- 2.Sxe5#
- 1...Be3
- 2.Sxe5#
- 1...Bg5
- 2.Sxe5#
- 1...Se6
- 2.Ra7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 2.Rbxh7#
- 1...Sf7
- 2.Ra7#
- 2.Re7#
- 2.Rxf7#
- 1...c4
- 2.Sa7#
- 2.Se7#
- 1...e4
- 2.Sd4#
- 1...Sxb7!
- 1...Bxh6
- 1.Rf7?
- 1...Bxh6
- 2.Sxe5#
- 1...d4
- 2.Qe4#
- 1...Bc1
- 2.Sxe5#
- 1...Bd2
- 2.Sxe5#
- 1...Be3
- 2.Sxe5#
- 1...Bg5
- 2.Sxe5#
- 1...Se6
- 2.Bxb7#
- 1...c4
- 2.Sa7#
- 1...e4
- 2.Sd4#
- 1...Sxf7!
- 1...Bxh6
- 1.Rg7?
- 1...Bxh6
- 2.Sxe5#
- 1...d4
- 2.Qe4#
- 1...Bc1
- 2.Sxe5#
- 1...Bd2
- 2.Sxe5#
- 1...Be3
- 2.Sxe5#
- 1...Bg5
- 2.Sxe5#
- 1...Se6
- 2.Bxb7#
- 1...c4
- 2.Sa7#
- 1...e4
- 2.Sd4#
- 1...Sf7!
- 1...Bxh6
- 1.Rexh7?
- 1...Bxh6
- 2.Sxe5#
- 1...d4
- 2.Qe4#
- 1...Bc1
- 2.Sxe5#
- 1...Bd2
- 2.Sxe5#
- 1...Be3
- 2.Sxe5#
- 1...Bg5
- 2.Sxe5#
- 1...Se6
- 2.Bxb7#
- 1...c4
- 2.Sa7#
- 1...e4
- 2.Sd4#
- 1...Sf7!
- 1...Bxh6
- 1.Qd3?
- 1...Bxh6
- 2.Sxe5#
- 1...cxb4
- 2.Qc2#
- 1...d4
- 2.Qe4#
- 1...Bc1
- 2.Sxe5#
- 1...Bd2
- 2.Sxe5#
- 1...Be3
- 2.Sxe5#
- 1...Bg5
- 2.Sxe5#
- 1...Se6
- 2.Bxb7#
- 1...Sf7
- 2.Bxb7#
- 1...c4
- 2.Sa7#
- 1...e4!
- 1...Bxh6
- 1.Qe4?
- 1...Bxh6
- 2.Sxe5#
- 1...cxb4
- 2.Qc2#
- 1...Bc1
- 2.Sxe5#
- 1...Bd2
- 2.Sxe5#
- 1...Be3
- 2.Sxe5#
- 1...Bg5
- 2.Sxe5#
- 1...Se6
- 2.Bxb7#
- 1...Sf7
- 2.Bxb7#
- 1...c4
- 2.Sa7#
- 1...dxe4!
- 1...Bxh6
- 1.Qxg6+?
- 1...Se6
- 2.Bxb7#
- 2.Qe8#
- 2.Qxe6#
- 1...hxg6!
- 1...Se6
- 1.Kxb2?
- Keys
- 1.Qf5!
- 1...Bxh6
- 2.Sxe5#
- 1...cxb4
- 2.Qc2#
- 1...d4
- 2.Qe4#
- 1...Bc1
- 2.Sxe5#
- 1...Bd2
- 2.Sxe5#
- 1...Be3
- 2.Sxe5#
- 1...Bg5
- 2.Sxe5#
- 1...Se6
- 2.Bxb7#
- 1...Sf7
- 2.Bxb7#
- 1...c4
- 2.Sa7#
- 1...e4
- 2.Qd7#
- 1...Bxh6
- 1.Qf5!
This anticipates 70999(1932)
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(c);N_GUARD::S(D),XP(g)
- B(c);N_GUARD,N_SPINB(j),XR(F)::S(D),XP(g)
- S(m);N_GUARD,N_SPINB(j)::B(H),XR(k)
- S(m);N_GUARD::B(H),XR(k)
- P(e);::S(I)
- P(f);::QAB(B)
- P(g);N_GUARD,N_PINQ(B)::S(D)
- Tries
- Try
- K(A);N_SPINQ(B),P-FLIGHT,XP(a)
- Vars
- B(c);N_GUARD,N_SPINB(j),XR(F)::S(D),XP(g)
- P(f);OGATEB::QAB(B)
- B(c);N_GUARD::S(D),XP(g)
- S(m);N_GUARD,N_SPINB(j)::B(H),XR(k)
- S(m);N_GUARD::B(H),XR(k)
- P(e);::S(I)
- P(g);N_GUARD::S(D)
- Refutation
- B(c);CHECK
- Try
- B(E);
- Vars
- B(c);N_GUARD,N_SPINB(j),XR(F)::S(D),XP(g)
- P(f);::QAB(B)
- B(c);N_GUARD::S(D),XP(g)
- S(m);N_GUARD,N_SPINB(j)::B(H),XR(k)
- S(m);N_GUARD::B(H),XR(k)
- P(e);::S(I)
- P(g);N_GUARD,N_PINQ(B)::S(D)
- Refutation
- P(d);
- Try
- R(F);CHECK,N_SPINQ(B),XB(j)
- Refutation
- P(l);XR(F)
- Try
- R(G);XR(k)
- Vars
- B(c);N_GUARD,N_SPINB(j),XR(F)::S(D),XP(g)
- P(f);::QAB(B)
- B(c);N_GUARD::S(D),XP(g)
- P(g);N_GUARD,N_PINQ(B)::S(D)
- Refutation
- S(m);P_SPINS(m),XR(G)
- Try
- R(G);
- Vars
- B(c);N_GUARD,N_SPINB(j),XR(F)::S(D),XP(g)
- P(f);::QAB(B)
- B(c);N_GUARD::S(D),XP(g)
- S(m);N_GUARD,N_SPINB(j)::B(H),XR(k)
- P(e);::S(I)
- P(g);N_GUARD,N_PINQ(B)::S(D)
- Refutation
- S(m);XR(G)
- Try
- R(G);
- Vars
- B(c);N_GUARD,N_SPINB(j),XR(F)::S(D),XP(g)
- P(f);::QAB(B)
- B(c);N_GUARD::S(D),XP(g)
- S(m);N_GUARD,N_SPINB(j)::B(H),XR(k)
- P(e);::S(I)
- P(g);N_GUARD,N_PINQ(B)::S(D)
- Refutation
- S(m);
- Try
- R(G);XP(l)
- Vars
- B(c);N_GUARD,N_SPINB(j),XR(F)::S(D),XP(g)
- P(f);::QAB(B)
- B(c);N_GUARD::S(D),XP(g)
- S(m);N_GUARD,N_SPINB(j)::B(H),XR(k)
- P(e);::S(I)
- P(g);N_GUARD,N_PINQ(B)::S(D)
- Refutation
- S(m);
- Try
- Q(B);N_PINP(e)
- Vars
- B(c);N_GUARD,N_SPINB(j),XR(F)::S(D),XP(g)
- P(e);XB(E)::QAR(B)
- P(f);::QAB(B)
- B(c);N_GUARD::S(D),XP(g)
- S(m);N_GUARD,N_SPINB(j)::B(H),XR(k)
- S(m);N_GUARD::B(H),XR(k)
- P(e);::S(I)
- Refutation
- P(g);N_PINQ(B)
- Try
- Q(B);N_PINP(e),P_PINP(f)
- Vars
- B(c);N_GUARD,N_SPINB(j),XR(F)::S(D),XP(g)
- P(e);XB(E)::QAR(B)
- B(c);N_GUARD::S(D),XP(g)
- S(m);N_GUARD,N_SPINB(j)::B(H),XR(k)
- S(m);N_GUARD::B(H),XR(k)
- P(e);::S(I)
- Refutation
- P(f);N_SPINP(f),XQ(B)
- Try
- Q(B);CHECK,N_PINP(e),N_SPINQ(B),XB(j)
- Refutation
- P(l);P_SPINP(l),XQ(B)
- Try
- Actual
- Q(B);N_PINP(e)
- Vars
- B(c);N_GUARD,N_SPINB(j),XR(F)::S(D),XP(g)
- P(e);XB(E)::QAR(B)
- P(f);::QAB(B)
- B(c);N_GUARD::S(D),XP(g)
- S(m);N_GUARD,N_SPINB(j)::B(H),XR(k)
- S(m);N_GUARD::B(H),XR(k)
- P(e);::S(I)
- P(g);N_PINQ(B)::QAB1(B)
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).