MESON Chess Problem Database
Problem Display
PID: 201600 (4r3/1N5R/1n2kB1n/1Bp5/1bp5/3N1Q1b/6p1/6K1 w - - 0 1)
Nanning, Willem
De Maasbode, 1922
#2
7 + 9
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Re7
- 2.Rxe7#
- 1...Ra8
- 2.Re7#
- 1...Rb8
- 2.Re7#
- 1...Rc8
- 2.Re7#
- 1...Rd8
- 2.Re7#
- 1...Rf8
- 2.Re7#
- 1...Rg8
- 2.Re7#
- 1...Rh8
- 2.Re7#
- 1...Bf5
- 2.Qc6#
- 1...Be1
- 2.Sdxc5#
- 1...Bd2
- 2.Sdxc5#
- 1...Bc3
- 2.Sdxc5#
- 1...Ba5
- 2.Sdxc5#
- 1...Sa4
- 2.Bxc4#
- 2.Bd7#
- 1...Sd5
- 2.Bd7#
- 1...Sd7
- 2.Bxc4#
- 2.Bxd7#
- 1...Sa8
- 2.Bxc4#
- 2.Bd7#
- 1...Sc8
- 2.Bxc4#
- 2.Bd7#
- 1...Re7
- Tries
- 1.Sbxc5+?
- 1...Kd6
- 2.Qc6#
- 1...Bxc5+!
- 1...Kd6
- 1.Sd8+?
- 1...Kd6
- 2.Qc6#
- 1...Rxd8!
- 1...Kd6
- 1.Bxc4+?
- 1...Sd5
- 2.Bxd5#
- 1...Sxc4!
- 1...Sd5
- 1.Bc3?
- threat
- 2.Qe4#
- 1...Sf7
- 2.Qxf7#
- 1...Bf5
- 2.Sf4#
- 2.Qc6#
- 1...Sd7
- 2.Bxc4#
- 2.Bxd7#
- 1...Sg4
- 2.Qf7#
- 1...Bxc3!
- threat
- 1.Bd4?
- threat
- 2.Qe4#
- 1...Sf7
- 2.Qxf7#
- 1...Bf5
- 2.Sf4#
- 2.Qc6#
- 1...Sd7
- 2.Bxc4#
- 2.Bxd7#
- 1...Sg4
- 2.Qf7#
- 1...cxd4!
- threat
- 1.Bh4?
- threat
- 2.Rxh6#
- 2.Qe4#
- 1...cxd3
- 2.Qe4#
- 1...Rf8
- 2.Re7#
- 2.Qe4#
- 1...Rg8
- 2.Re7#
- 2.Qe4#
- 1...Rh8
- 2.Re7#
- 2.Qe4#
- 1...Bf5
- 2.Qc6#
- 1...Bd2
- 2.Qe4#
- 1...Sd5
- 2.Bd7#
- 2.Qe4#
- 1...Sd7
- 2.Bxc4#
- 2.Bxd7#
- 1...Sg4
- 2.Qf7#
- 1...Sf5
- 2.Qe4#
- 1...Sf7
- 2.Qxf7#
- 1...Sg8
- 2.Qe4#
- 2.Qf7#
- 1...Bc3!
- threat
- 1.Bg5?
- threat
- 2.Rxh6#
- 2.Qe4#
- 1...cxd3
- 2.Qe4#
- 1...Rf8
- 2.Re7#
- 2.Qe4#
- 1...Rg8
- 2.Re7#
- 2.Qe4#
- 1...Rh8
- 2.Re7#
- 2.Qe4#
- 1...Bf5
- 2.Qc6#
- 1...Sd5
- 2.Bd7#
- 2.Qe4#
- 1...Sd7
- 2.Bxc4#
- 2.Bxd7#
- 1...Sg4
- 2.Qf7#
- 1...Sf5
- 2.Qe4#
- 1...Sf7
- 2.Qxf7#
- 1...Sg8
- 2.Qe4#
- 2.Qf7#
- 1...Bc3!
- threat
- 1.Bh8?
- threat
- 2.Qe4#
- 1...Sf7
- 2.Qxf7#
- 1...Bf5
- 2.Sf4#
- 2.Qc6#
- 1...Bc3
- 2.Sdxc5#
- 1...Sd7
- 2.Bxc4#
- 2.Bxd7#
- 1...Sg4
- 2.Qf7#
- 1...Rxh8!
- threat
- 1.Sbxc5+?
- Keys
- 1.Be7!
- threat
- 2.Qe4#
- 1...Rxe7
- 2.Rxh6#
- 1...Sf7
- 2.Qxf7#
- 1...Bf5
- 2.Qc6#
- 1...Bc3
- 2.Sbxc5#
- 1...Sd7
- 2.Bxc4#
- 1...Sg4
- 2.Qf7#
- threat
- 1.Be7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 11
- Sets
- R(i);N_GUARD::R1(G),XR(i)
- R(i);N_GUARD::R1(G)
- B(b);SBLOCK::QAR2(C)
- B(c);N_GUARD::S(B),XP(e)
- S(f);N_GUARD::B(D)
- Tries
- Try
- S(F);CHECK,XP(e)
- Vars
- K(g);P-FLIGHT::QAR1(C)
- Refutation
- B(c);CHECK,XS(F)
- Try
- S(F);CHECK
- Vars
- K(g);P-FLIGHT::QAR1(C)
- Refutation
- R(i);XS(F)
- Try
- B(D);CHECK,XP(d)
- Vars
- S(f);N_GUARD,P_SPINS(f)::B(D),XS(f)
- Refutation
- S(f);XB(D)
- Try
- B(E);
- Threat
- QAR2(C)
- Vars
- S(h);N_GUARD::QAB1(C),XS(h)
- S(h);N_GUARD::QAB1(C)
- Refutation
- B(c);XB(E)
- Try
- B(E);
- Threat
- QAR2(C)
- Vars
- S(h);N_GUARD::QAB1(C),XS(h)
- S(h);N_GUARD::QAB1(C)
- Refutation
- P(e);XB(E)
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- P(d);XS(B)::QAR2(C)
- B(b);SBLOCK::QAR2(C)
- B(c);::QAR2(C)
- S(h);N_GUARD::QAB1(C)
- S(h);::QAR2(C)
- S(h);N_GUARD::QAB1(C),XS(h)
- Refutation
- B(c);
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- P(d);XS(B)::QAR2(C)
- B(b);SBLOCK::QAR2(C)
- S(h);N_GUARD::QAB1(C)
- S(h);::QAR2(C)
- S(h);N_GUARD::QAB1(C),XS(h)
- Refutation
- B(c);
- Try
- B(E);
- Threat
- QAR2(C)
- Vars
- S(h);N_GUARD::QAB1(C),XS(h)
- B(c);N_GUARD::S(B),XP(e)
- S(h);N_GUARD::QAB1(C)
- Refutation
- R(i);XB(E)
- Try
- Actual
- B(E);
- Threat
- QAR2(C)
- Vars
- R(i);SBLOCK,XB(E)::R(G),XS(h)
- S(h);N_GUARD::QAB1(C),XS(h)
- B(b);SBLOCK::QAR2(C)
- B(c);N_GUARD::S(F),XP(e)
- S(f);N_GUARD,SBLOCK::B(D),XP(d)
- S(h);N_GUARD::QAB1(C)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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