MESON Chess Problem Database
Problem Display
PID: 201602 (1b2Qn2/1Np5/KB2pN1n/P2Pk2P/3p2p1/3B2p1/6P1/5R2 w - - 0 1)
Nanning, Willem
De Maasbode, 1922
#2
11 + 9
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Ba7
- 2.Bxc7#
- 1...Sf5
- 2.Rxf5#
- 1...Sf7
- 2.Rf5#
- 1...Sg8
- 2.Rf5#
- 1...Sg6
- 2.Qxe6#
- 1...Sd7
- 2.Qxe6#
- 1...Sh7
- 2.Qxe6#
- 1...cxb6
- 2.Qxb8#
- 1...c5
- 2.Qxb8#
- 1...c6
- 2.Qxb8#
- 1...Ba7
- Tries
- 1.Kb5?
- 1...cxb6
- 2.Qxb8#
- 1...Sf5
- 2.Rxf5#
- 1...Ba7
- 2.Bxc7#
- 1...Sf7
- 2.Rf5#
- 1...Sg8
- 2.Rf5#
- 1...Sg6
- 2.Qxe6#
- 1...Sd7
- 2.Qxe6#
- 1...Sh7
- 2.Qxe6#
- 1...c5
- 2.Qxb8#
- 1...c6+!
- 1...cxb6
- 1.Sxg4+?
- 1...Sxg4
- 2.Rf5#
- 1...Kxd5!
- 1...Sxg4
- 1.Sd7+?
- 1...Sxd7
- 2.Qxe6#
- 1...Kxd5!
- 1...Sxd7
- 1.Bb1?
- 1...cxb6
- 2.Qxb8#
- 1...Sf5
- 2.Rxf5#
- 1...Ba7
- 2.Bxc7#
- 1...Sf7
- 2.Rf5#
- 1...Sg8
- 2.Rf5#
- 1...Sg6
- 2.Qxe6#
- 1...Sd7
- 2.Qxe6#
- 1...Sh7
- 2.Qxe6#
- 1...c5
- 2.Qxb8#
- 1...c6
- 2.Qxb8#
- 1...d3!
- 1...cxb6
- 1.Bc2?
- 1...cxb6
- 2.Qxb8#
- 1...Sf5
- 2.Rxf5#
- 1...Ba7
- 2.Bxc7#
- 1...Sf7
- 2.Rf5#
- 1...Sg8
- 2.Rf5#
- 1...Sg6
- 2.Qxe6#
- 1...Sd7
- 2.Qxe6#
- 1...Sh7
- 2.Qxe6#
- 1...c5
- 2.Qxb8#
- 1...c6
- 2.Qxb8#
- 1...d3!
- 1...cxb6
- 1.Be4?
- 1...cxb6
- 2.Qxb8#
- 1...Sf5
- 2.Rxf5#
- 1...Ba7
- 2.Bxc7#
- 1...Sf7
- 2.Rf5#
- 1...Sg8
- 2.Rf5#
- 1...Sg6
- 2.Qxe6#
- 1...Sd7
- 2.Qxe6#
- 1...Sh7
- 2.Qxe6#
- 1...c5
- 2.Qxb8#
- 1...c6
- 2.Qxb8#
- 1...d3!
- 1...cxb6
- 1.Bg6?
- 1...Sxg6
- 2.Qxe6#
- 1...cxb6
- 2.Qxb8#
- 1...Sf5
- 2.Rxf5#
- 1...Ba7
- 2.Bxc7#
- 1...Sf7
- 2.Rf5#
- 1...Sg8
- 2.Rf5#
- 1...Sd7
- 2.Qxe6#
- 1...Sh7
- 2.Qxe6#
- 1...c5
- 2.Qxb8#
- 1...c6
- 2.Qxb8#
- 1...d3!
- 1...Sxg6
- 1.Bh7?
- 1...Sxh7
- 2.Qxe6#
- 1...cxb6
- 2.Qxb8#
- 1...Sf5
- 2.Rxf5#
- 1...Ba7
- 2.Bxc7#
- 1...Sf7
- 2.Rf5#
- 1...Sg8
- 2.Rf5#
- 1...Sg6
- 2.Qxe6#
- 1...Sd7
- 2.Qxe6#
- 1...c5
- 2.Qxb8#
- 1...c6
- 2.Qxb8#
- 1...d3!
- 1...Sxh7
- 1.Bc5?
- 1...Sf5
- 2.Rxf5#
- 1...Sf7
- 2.Rf5#
- 1...Sg8
- 2.Rf5#
- 1...Sg6
- 2.Qxe6#
- 1...Sd7
- 2.Qxe6#
- 1...Sh7
- 2.Qxe6#
- 1...c6
- 2.Qxb8#
- 1...Ba7!
- 1...Sf5
- 1.Ba7?
- 1...Sf5
- 2.Rxf5#
- 1...Sf7
- 2.Rf5#
- 1...Sg8
- 2.Rf5#
- 1...Sg6
- 2.Qxe6#
- 1...Sd7
- 2.Qxe6#
- 1...Sh7
- 2.Qxe6#
- 1...c5
- 2.Bxb8#
- 2.Qxb8#
- 1...c6
- 2.Bxb8#
- 2.Qxb8#
- 1...Bxa7!
- 1...Sf5
- 1.Rf2?
- 1...cxb6
- 2.Qxb8#
- 1...Sf5
- 2.Rxf5#
- 1...Ba7
- 2.Bxc7#
- 1...Sf7
- 2.Rf5#
- 1...Sg8
- 2.Rf5#
- 1...Sg6
- 2.Qxe6#
- 1...Sd7
- 2.Qxe6#
- 1...Sh7
- 2.Qxe6#
- 1...c5
- 2.Qxb8#
- 1...c6
- 2.Qxb8#
- 1...gxf2!
- 1...cxb6
- 1.Rf3?
- 1...cxb6
- 2.Qxb8#
- 1...Sf5
- 2.Rxf5#
- 1...Ba7
- 2.Bxc7#
- 1...Sf7
- 2.Rf5#
- 1...Sg8
- 2.Rf5#
- 1...Sg6
- 2.Qxe6#
- 1...Sd7
- 2.Qxe6#
- 1...Sh7
- 2.Qxe6#
- 1...c5
- 2.Qxb8#
- 1...c6
- 2.Qxb8#
- 1...gxf3!
- 1...cxb6
- 1.Qc6?
- 1...exd5
- 2.Qxd5#
- 1...Sf5
- 2.Sxg4#
- 1...Ba7
- 2.Bxc7#
- 2.Qxc7#
- 1...Sf7
- 2.Sxg4#
- 1...Sg8
- 2.Sxg4#
- 1...Sg6
- 2.Sd7#
- 2.Qxe6#
- 1...Sd7
- 2.Sxd7#
- 2.Qxe6#
- 1...Sh7
- 2.Sd7#
- 2.Qxe6#
- 1...cxb6!
- 1...exd5
- 1.Kb5?
- Keys
- 1.Qb5!
- 1...exd5
- 2.Qxd5#
- 1...cxb6
- 2.d6#
- 1...Sf5
- 2.Sxg4#
- 1...Ba7
- 2.Bxc7#
- 1...Sf7
- 2.Sxg4#
- 1...Sg8
- 2.Sxg4#
- 1...Sg6
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sh7
- 2.Sd7#
- 1...c5
- 2.dxc5 ep#
- 1...c6
- 2.dxc6#
- 1...exd5
- 1.Qb5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 9
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(h);N_GUARD::B(H),XP(g)
- S(f);N_GUARD::R1(A),XS(f)
- S(f);N_GUARD::R1(A)
- S(i);N_GUARD::QAR1(K),XP(e)
- P(g);OGATEB,XB(H)::QAB(K),XB(h)
- P(g);OGATEB::QAB(K),XB(h)
- Tries
- Try
- K(G);S_FLIGHT
- Vars
- P(g);OGATEB,XB(H)::QAB(K),XB(h)
- S(f);N_GUARD::R1(A),XS(f)
- B(h);N_GUARD::B(H),XP(g)
- S(f);N_GUARD::R1(A)
- S(i);N_GUARD::QAR1(K),XP(e)
- P(g);OGATEB::QAB(K),XB(h)
- Refutation
- P(g);CHECK
- Try
- S(I);CHECK,XP(c)
- Vars
- S(f);XS(I)::R1(A)
- Refutation
- K(d);N_SPINP(e),P-FLIGHT,XP(E)
- Try
- S(I);CHECK
- Vars
- S(i);XS(I)::QAR1(K),XP(e)
- Refutation
- K(d);N_SPINP(e),P-FLIGHT,XP(E)
- Try
- B(C);
- Vars
- P(g);OGATEB,XB(H)::QAB(K),XB(h)
- S(f);N_GUARD::R1(A),XS(f)
- B(h);N_GUARD::B(H),XP(g)
- S(f);N_GUARD::R1(A)
- S(i);N_GUARD::QAR1(K),XP(e)
- P(g);OGATEB::QAB(K),XB(h)
- Refutation
- P(b);
- Try
- B(C);
- Vars
- P(g);OGATEB,XB(H)::QAB(K),XB(h)
- S(f);N_GUARD::R1(A),XS(f)
- B(h);N_GUARD::B(H),XP(g)
- S(f);N_GUARD::R1(A)
- S(i);N_GUARD::QAR1(K),XP(e)
- P(g);OGATEB::QAB(K),XB(h)
- Refutation
- P(b);
- Try
- B(C);
- Vars
- P(g);OGATEB,XB(H)::QAB(K),XB(h)
- S(f);N_GUARD::R1(A),XS(f)
- B(h);N_GUARD::B(H),XP(g)
- S(f);N_GUARD::R1(A)
- S(i);N_GUARD::QAR1(K),XP(e)
- P(g);OGATEB::QAB(K),XB(h)
- Refutation
- P(b);
- Try
- B(C);
- Vars
- S(i);N_GUARD,XB(C)::QAR1(K),XP(e)
- P(g);OGATEB,XB(H)::QAB(K),XB(h)
- S(f);N_GUARD::R1(A),XS(f)
- B(h);N_GUARD::B(H),XP(g)
- S(f);N_GUARD::R1(A)
- S(i);N_GUARD::QAR1(K),XP(e)
- P(g);OGATEB::QAB(K),XB(h)
- Refutation
- P(b);
- Try
- B(C);
- Vars
- S(i);N_GUARD,XB(C)::QAR1(K),XP(e)
- P(g);OGATEB,XB(H)::QAB(K),XB(h)
- S(f);N_GUARD::R1(A),XS(f)
- B(h);N_GUARD::B(H),XP(g)
- S(f);N_GUARD::R1(A)
- S(i);N_GUARD::QAR1(K),XP(e)
- P(g);OGATEB::QAB(K),XB(h)
- Refutation
- P(b);
- Try
- B(H);
- Vars
- S(f);N_GUARD::R1(A),XS(f)
- S(f);N_GUARD::R1(A)
- S(i);N_GUARD::QAR1(K),XP(e)
- P(g);OGATEB::QAB(K),XB(h)
- Refutation
- B(h);
- Try
- B(H);
- Vars
- S(f);N_GUARD::R1(A),XS(f)
- S(f);N_GUARD::R1(A)
- S(i);N_GUARD::QAR1(K),XP(e)
- Refutation
- B(h);XB(H)
- Try
- R(A);
- Vars
- P(g);OGATEB,XB(H)::QAB(K),XB(h)
- S(f);N_GUARD::R1(A),XS(f)
- B(h);N_GUARD::B(H),XP(g)
- S(f);N_GUARD::R1(A)
- S(i);N_GUARD::QAR1(K),XP(e)
- P(g);OGATEB::QAB(K),XB(h)
- Refutation
- P(a);XR(A)
- Try
- R(A);
- Vars
- P(g);OGATEB,XB(H)::QAB(K),XB(h)
- S(f);N_GUARD::R1(A),XS(f)
- B(h);N_GUARD::B(H),XP(g)
- S(f);N_GUARD::R1(A)
- S(i);N_GUARD::QAR1(K),XP(e)
- P(g);OGATEB::QAB(K),XB(h)
- Refutation
- P(c);XR(A)
- Try
- Q(K);N_PINP(e)
- Vars
- P(e);OGATE,XP(E)::QAR1(K),XP(e)
- S(f);N_GUARD::S(I),XP(c)
- Refutation
- P(g);XB(H)
- Try
- Actual
- Q(K);N_PINP(e)
- Vars
- P(e);OGATE,P_SPINP(e),XP(E)::QAR1(K),XP(e)
- P(g);N_GUARD,XB(H)::QAR(K)+P(E)
- S(f);N_GUARD::S(I),XP(c)
- B(h);N_GUARD::B(H),XP(g)
- S(i);N_GUARD::S(I)
- S(i);N_GUARD::S(I),XS(i)
- P(g);OGATE::QAR(K)+P(E),XP(g),EP
- P(g);OGATE::QAR(K)+P(E),XP(g)
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).