MESON Chess Problem Database
Problem Display
PID: 268402 (bKQ5/2p2P2/2k2BR1/1Rpr1p2/2p1qN2/8/1P6/7B w - - 0 1)
Cristoffanini, Guido
Swiat Szachowy, 1931
#2
9 + 8
| 15601 | Albrecht-Leiss-Degener Collection | 2023 |
SOLUTION
- SOUND
- Sets
- 1...Kd6
- 2.Qxc7#
- 1...Rd7
- 2.Qa6#
- 1...Kd6
- Tries
- 1.Bc3+?
- 1...Kxb5
- 2.Qa6#
- 1...Rd6
- 2.Qe8#
- 1...Qe6!
- 1...Kxb5
- 1.Be5+?
- 1...Rd6
- 2.Qe8#
- 1...Kxb5!
- 1...Rd6
- 1.Be7+?
- 1...Qe6
- 2.Qe8#
- 1...Rd6
- 2.Qe8#
- 1...Kxb5!
- 1...Qe6
- 1.Rb3?
- threat
- 2.Qxc7#
- 1...Kd6
- 2.Qxc7#
- 1...Qxf4
- 2.Be5#
- 1...Qe5
- 2.Bxe5#
- 1...Qe7
- 2.Bxe7#
- 1...Qe8
- 2.Be7#
- 1...Rd7
- 2.Qa6#
- 1...Rd8
- 2.Bxd8#
- 1...cxb3!
- threat
- 1.Rb4?
- threat
- 2.Qxc7#
- 1...Kd6
- 2.Qxc7#
- 1...Qxf4
- 2.Be5#
- 1...Qe5
- 2.Bxe5#
- 1...Qe7
- 2.Bxe7#
- 1...Qe8
- 2.Be7#
- 1...Rd7
- 2.Qa6#
- 1...Rd8
- 2.Bxd8#
- 1...cxb4!
- threat
- 1.Qb7+?
- 1...Kd6
- 2.Qxc7#
- 1...Kd7
- 2.Qxc7#
- 1...Bxb7!
- 1...Kd6
- 1.Bc3+?
- Keys
- 1.Ra5!
- threat
- 2.Qxc7#
- 1...Kb6
- 2.Qa6#
- 2.Qxc7#
- 1...Kd6
- 2.Qxc7#
- 1...Qxf4
- 2.Be5#
- 1...Qe5
- 2.Bxe5#
- 1...Qe7
- 2.Bxe7#
- 1...Qe8
- 2.Be7#
- 1...Rd7
- 2.Qa6#
- 1...Rd8
- 2.Bxd8#
- threat
- 1.Ra5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- K(f);N_GUARD,N_SPINP(g),P-FLIGHT::QAB1(I),XP(g)
- R(d);P_SPINQ(b),SBLOCK::QAR2(I)
- Tries
- Try
- B(E);CHECK
- Vars
- K(f);N_GUARD,N_SPINP(g),S_FLIGHT,XR(D)::QAB1(I)
- R(d);P_SPINQ(b),P_SPINR(d)::QAB(I)
- Refutation
- Q(b);P_SPINQ(b),P_SPINR(d)
- Try
- B(E);CHECK
- Vars
- R(d);P_SPINQ(b),P_SPINR(d)::QAB(I)
- Refutation
- K(f);N_SPINP(g),S_FLIGHT,XR(D)
- Try
- B(E);CHECK
- Vars
- Q(b);P_SPINQ(b),P_SPINR(d)::QAB(I)
- R(d);P_SPINQ(b),P_SPINR(d)::QAB(I)
- Refutation
- K(f);N_SPINP(g),S_FLIGHT,XR(D)
- Try
- R(D);
- Threat
- QAR1(I),XP(g)
- Vars
- K(f);N_SPINP(g),P-FLIGHT::QAB1(I),XP(g)
- Q(b);P_SPINR(d),XS(C)::R(F)+B(E)
- Q(b);P_SPINR(d)::R(F)+B(E),XQ(b)
- Q(b);N_GUARD,P_SPINR(d)::R(F)+B(E),XQ(b)
- Q(b);N_GUARD,P_PINQ(I),P_SPINR(d)::R(F)+B(E)
- R(d);P_SPINQ(b),SBLOCK::QAR2(I)
- R(d);N_GUARD,P_PINQ(I),P_SPINQ(b)::R(F)+B(E),XR(d)
- Refutation
- P(a);XR(D)
- Try
- R(D);
- Threat
- QAR1(I),XP(g)
- Vars
- K(f);N_SPINP(g),P-FLIGHT::QAB1(I),XP(g)
- Q(b);P_SPINR(d),XS(C)::R(F)+B(E)
- Q(b);P_SPINR(d)::R(F)+B(E),XQ(b)
- Q(b);N_GUARD,P_SPINR(d)::R(F)+B(E),XQ(b)
- Q(b);N_GUARD,P_PINQ(I),P_SPINR(d)::R(F)+B(E)
- R(d);P_SPINQ(b),SBLOCK::QAR2(I)
- R(d);N_GUARD,P_PINQ(I),P_SPINQ(b)::R(F)+B(E),XR(d)
- Refutation
- P(c);XR(D)
- Try
- Q(I);CHECK,N_PINP(g)
- Vars
- K(f);N_GUARD,P-FLIGHT::QAB1(I),XP(g)
- K(f);N_GUARD,P_SPINP(g),S_FLIGHT::QAR1(I),XP(g)
- Refutation
- B(h);XQ(I)
- Try
- Actual
- R(D);
- Threat
- QAR1(I),XP(g)
- Vars
- K(f);N_SPINP(g),P-FLIGHT::QAB1(I),XP(g)
- Q(b);P_SPINR(d),XS(C)::R(F)+B(E)
- Q(b);P_SPINR(d)::R(F)+B(E),XQ(b)
- Q(b);N_GUARD,P_SPINR(d)::R(F)+B(E),XQ(b)
- Q(b);N_GUARD,P_PINQ(I),P_SPINR(d)::R(F)+B(E)
- R(d);P_SPINQ(b),SBLOCK::QAR2(I)
- R(d);N_GUARD,P_PINQ(I),P_SPINQ(b)::R(F)+B(E),XR(d)
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).