MESON Chess Problem Database
Problem Display
PID: 228872 (2N1bq2/pQP2P2/7p/1Pk3nR/rp1p1B2/1Pn1N3/p1B2K2/2R5 w - - 0 1)
Cristoffanini, Guido
L'Echiquier, 1926
#2
12 + 11
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qd6
- 2.Bxd6#
- 1...Qg7
- 2.Bd6#
- 1...Qg8
- 2.Bd6#
- 1...Qh8
- 2.Bd6#
- 1...Bc6
- 2.Qxc6#
- 1...Bxf7
- 2.Qc6#
- 1...Sb1
- 2.Bxb1#
- 2.Qd5#
- 1...Sd1+
- 2.Bxd1#
- 1...Se2
- 2.Qd5#
- 1...Se4+
- 2.Bxe4#
- 1...Sxb5
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...dxe3+
- 2.Bxe3#
- 1...a5
- 2.Qb6#
- 1...a6
- 2.Qb6#
- 1...Qd6
- Tries
- 1.Bb1?
- threat
- 2.Qd5#
- 1...dxe3+
- 2.Bxe3#
- 1...Bxf7
- 2.Qc6#
- 1...Qd6
- 2.Bxd6#
- 1...Bc6
- 2.Qxc6#
- 1...Qxf7!
- threat
- 1.Bd1?
- threat
- 2.Qd5#
- 1...dxe3+
- 2.Bxe3#
- 1...Bxf7
- 2.Qc6#
- 1...Qd6
- 2.Bxd6#
- 1...Bc6
- 2.Qxc6#
- 1...Qxf7!
- threat
- 1.Bd3?
- threat
- 2.Qd5#
- 1...dxe3+
- 2.Bxe3#
- 1...Bxf7
- 2.Qc6#
- 1...Qd6
- 2.Bxd6#
- 1...Bc6
- 2.Qxc6#
- 1...Qxf7!
- threat
- 1.Be4?
- threat
- 2.Qd5#
- 1...dxe3+
- 2.Bxe3#
- 1...Bxf7
- 2.Qc6#
- 1...Qd6
- 2.Bxd6#
- 1...Bc6
- 2.Qxc6#
- 1...Qxf7!
- threat
- 1.Bg6?
- threat
- 2.Qd5#
- 1...dxe3+
- 2.Bxe3#
- 1...Bxf7
- 2.Qc6#
- 1...Qd6
- 2.Bxd6#
- 1...Bc6
- 2.Qxc6#
- 1...Qxf7!
- threat
- 1.Bh7?
- threat
- 2.Qd5#
- 1...dxe3+
- 2.Bxe3#
- 1...Bxf7
- 2.Qc6#
- 1...Qd6
- 2.Bxd6#
- 1...Bc6
- 2.Qxc6#
- 1...Qxf7!
- threat
- 1.Rxg5+?
- 1...Sd5
- 2.Bb1#
- 2.Bd1#
- 2.Bd3#
- 2.Be4#
- 2.Bg6#
- 2.Bh7#
- 2.Rxd5#
- 2.Qxd5#
- 1...hxg5!
- 1...Sd5
- 1.Qxa7+?
- 1...Kxb5
- 2.Qb6#
- 1...Rxa7!
- 1...Kxb5
- 1.Bb1?
- Keys
- 1.Bf5!
- threat
- 2.Qd5#
- 1...Sh3+
- 2.Bxh3#
- 1...Se4+
- 2.Bxe4#
- 1...dxe3+
- 2.Bxe3#
- 1...Qxf7
- 2.Bd6#
- 1...Bxf7
- 2.Qc6#
- 1...Qd6
- 2.Bxd6#
- 1...Bc6
- 2.Qxc6#
- threat
- 1.Bf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 10
- Sets
- Q(k);N_GUARD::B(F),XQ(k)
- Q(k);N_GUARD::B(F)
- B(j);N_GUARD::QAR1(I),XB(j)
- B(j);N_GUARD,XP(K)::QAR1(I)
- S(b);CHECK,OGATEB::R(A)+B(B),XS(b)
- S(b);N_GUARD::QAR1(I)
- S(b);N_GUARD,SBLOCK,XP(G)::QAR1(I)
- S(b);N_GUARD,N_SPINS(g)::QAR1(I),XS(b)
- P(e);CHECK,OGATE,XS(E)::B(F),XP(e)
- P(i);N_GUARD::QAB1(I)
- Tries
- Try
- B(B);N_PINS(g),P_PINS(b)
- Threat
- QAR1(I)
- Vars
- P(e);CHECK,OGATE,XS(E)::B(F),XP(e)
- B(j);N_GUARD,XP(K)::QAR1(I)
- Q(k);N_GUARD::B(F),XQ(k)
- B(j);N_GUARD::QAR1(I),XB(j)
- Refutation
- Q(k);P_PINB(F),XP(K)
- Try
- B(B);N_PINS(g),P_PINS(b)
- Threat
- QAR1(I)
- Vars
- P(e);CHECK,OGATE,XS(E)::B(F),XP(e)
- B(j);N_GUARD,XP(K)::QAR1(I)
- Q(k);N_GUARD::B(F),XQ(k)
- B(j);N_GUARD::QAR1(I),XB(j)
- Refutation
- Q(k);P_PINB(F),XP(K)
- Try
- B(B);N_PINS(g),P_PINS(b)
- Threat
- QAR1(I)
- Vars
- P(e);CHECK,OGATE,XS(E)::B(F),XP(e)
- B(j);N_GUARD,XP(K)::QAR1(I)
- Q(k);N_GUARD::B(F),XQ(k)
- B(j);N_GUARD::QAR1(I),XB(j)
- Refutation
- Q(k);P_PINB(F),XP(K)
- Try
- B(B);N_PINS(g),P_PINS(b)
- Threat
- QAR1(I)
- Vars
- P(e);CHECK,OGATE,XS(E)::B(F),XP(e)
- B(j);N_GUARD,XP(K)::QAR1(I)
- Q(k);N_GUARD::B(F),XQ(k)
- B(j);N_GUARD::QAR1(I),XB(j)
- Refutation
- Q(k);P_PINB(F),XP(K)
- Try
- B(B);N_PINS(g),P_PINS(b)
- Threat
- QAR1(I)
- Vars
- P(e);CHECK,OGATE,XS(E)::B(F),XP(e)
- B(j);N_GUARD,XP(K)::QAR1(I)
- Q(k);N_GUARD::B(F),XQ(k)
- B(j);N_GUARD::QAR1(I),XB(j)
- Refutation
- Q(k);P_PINB(F),XP(K)
- Try
- B(B);N_PINS(g),P_PINS(b)
- Threat
- QAR1(I)
- Vars
- P(e);CHECK,OGATE,XS(E)::B(F),XP(e)
- B(j);N_GUARD,XP(K)::QAR1(I)
- Q(k);N_GUARD::B(F),XQ(k)
- B(j);N_GUARD::QAR1(I),XB(j)
- Refutation
- Q(k);P_PINB(F),XP(K)
- Try
- R(H);CHECK,XS(g)
- Refutation
- P(h);XR(H)
- Try
- Q(I);CHECK,XP(i)
- Vars
- K(f);P-FLIGHT,XP(G)::QAR1(I)
- Refutation
- R(c);XQ(I)
- Try
- Actual
- B(B);N_PINS(g),P_PINS(b)
- Threat
- QAR1(I)
- Vars
- S(g);CHECK,OGATEB::R(H)+B(B),XS(g)
- P(e);CHECK,OGATE,XS(E)::B(F),XP(e)
- Q(k);N_GUARD,XP(K)::B(F)
- B(j);N_GUARD,XP(K)::QAR1(I)
- Q(k);N_GUARD::B(F),XQ(k)
- B(j);N_GUARD::QAR1(I),XB(j)
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).