MESON Chess Problem Database
Problem Display
PID: 58223 (8/8/2P1P3/1Q1Kp3/1N2P3/n7/1R1N4/k1n5 w - - 0 1)
Vitale, Luigi
Scacco!, 1997
#2
8 + 4
SOLUTION
- SOUND
- Sets
- 1...Sa2
- 2.Rxa2#
- 1...Se2
- 2.Ra2#
- 1...Sb3
- 2.Ra2#
- 1...Sd3
- 2.Ra2#
- 1...Sb1
- 2.Sc2#
- 2.Rxb1#
- 1...Sc2
- 2.Sxc2#
- 2.Rb1#
- 1...Sc4
- 2.Sc2#
- 2.Rb1#
- 1...Sxb5
- 2.Rb1#
- 1...Sa2
- Tries
- 1.Qf1?
- threat
- 2.Ra2#
- 1...Sb1
- 2.Rxb1#
- 1...Kxb2!
- threat
- 1.Qe2?
- 1...Sxe2
- 2.Ra2#
- 1...Sa2
- 2.Sb3#
- 2.Rxa2#
- 1...Sb3
- 2.Sxb3#
- 2.Ra2#
- 1...Sd3
- 2.Sb3#
- 2.Ra2#
- 1...Sb1
- 2.Rxb1#
- 1...Sc2
- 2.Rb1#
- 1...Sc4
- 2.Rb1#
- 1...Sb5
- 2.Rb1#
- 1...Kxb2!
- 1...Sxe2
- 1.Qd3?
- 1...Sxd3
- 2.Ra2#
- 1...Sa2
- 2.Rxa2#
- 1...Se2
- 2.Ra2#
- 2.Qxa3#
- 1...Sb3
- 2.Ra2#
- 1...Sb1
- 2.Rxb1#
- 2.Qxb1#
- 1...Sc2
- 2.Rb1#
- 1...Sc4
- 2.Rb1#
- 2.Qb1#
- 1...Sb5
- 2.Rb1#
- 2.Qb1#
- 1...Kxb2!
- 1...Sxd3
- 1.Qa4?
- threat
- 2.Rb1#
- 1...Sa2
- 2.Rxa2#
- 1...Kxb2!
- threat
- 1.Qc4?
- 1...Sxc4
- 2.Rb1#
- 1...Sa2
- 2.Rxa2#
- 2.Qxa2#
- 1...Se2
- 2.Ra2#
- 2.Qa2#
- 1...Sb3
- 2.Ra2#
- 1...Sd3
- 2.Ra2#
- 2.Qa2#
- 1...Sb1
- 2.Rxb1#
- 1...Sc2
- 2.Rb1#
- 1...Sb5
- 2.Rb1#
- 2.Qxc1#
- 1...Kxb2!
- 1...Sxc4
- 1.Qa6?
- threat
- 2.Rb1#
- 1...Sa2
- 2.Rxa2#
- 1...Kxb2!
- threat
- 1.Qa5?
- threat
- 2.Rb1#
- 1...Sa2
- 2.Rxa2#
- 1...Kxb2!
- threat
- 1.Qc5?
- 1...Sa2
- 2.Rxa2#
- 1...Se2
- 2.Ra2#
- 1...Sb3
- 2.Ra2#
- 1...Sd3
- 2.Ra2#
- 1...Sb1
- 2.Rxb1#
- 1...Sc2
- 2.Rb1#
- 1...Sc4
- 2.Rb1#
- 1...Sb5
- 2.Rb1#
- 2.Qxc1#
- 1...Kxb2!
- 1...Sa2
- 1.Qb6?
- 1...Sa2
- 2.Rxa2#
- 1...Se2
- 2.Ra2#
- 1...Sb3
- 2.Ra2#
- 1...Sd3
- 2.Ra2#
- 1...Sb1
- 2.Sc2#
- 2.Rxb1#
- 1...Sc2
- 2.Sxc2#
- 2.Rb1#
- 1...Sc4
- 2.Sc2#
- 2.Rb1#
- 1...Sb5
- 2.Rb1#
- 1...Kxb2!
- 1...Sa2
- 1.Qb7?
- 1...Sa2
- 2.Rxa2#
- 1...Se2
- 2.Ra2#
- 1...Sb3
- 2.Ra2#
- 1...Sd3
- 2.Ra2#
- 1...Sb1
- 2.Sc2#
- 2.Rxb1#
- 1...Sc2
- 2.Sxc2#
- 2.Rb1#
- 1...Sc4
- 2.Sc2#
- 2.Rb1#
- 1...Sb5
- 2.Rb1#
- 1...Kxb2!
- 1...Sa2
- 1.c7?
- 1...Sxb5
- 2.Rb1#
- 1...Sa2
- 2.Rxa2#
- 1...Se2
- 2.Ra2#
- 1...Sb3
- 2.Ra2#
- 1...Sd3
- 2.Ra2#
- 1...Sb1
- 2.Sc2#
- 2.Rxb1#
- 1...Sc2
- 2.Sxc2#
- 2.Rb1#
- 1...Sc4
- 2.Sc2#
- 2.Rb1#
- 1...Kxb2!
- 1...Sxb5
- 1.e7?
- 1...Sxb5
- 2.Rb1#
- 1...Sa2
- 2.Rxa2#
- 1...Se2
- 2.Ra2#
- 1...Sb3
- 2.Ra2#
- 1...Sd3
- 2.Ra2#
- 1...Sb1
- 2.Sc2#
- 2.Rxb1#
- 1...Sc2
- 2.Sxc2#
- 2.Rb1#
- 1...Sc4
- 2.Sc2#
- 2.Rb1#
- 1...Kxb2!
- 1...Sxb5
- 1.Qf1?
- Keys
- 1.Qb8!
- 1...Kxb2
- 2.Qxe5#
- 1...Sa2
- 2.Rxa2#
- 1...Se2
- 2.Ra2#
- 1...Sb3
- 2.Ra2#
- 1...Sd3
- 2.Ra2#
- 1...Sb1
- 2.Sc2#
- 2.Rxb1#
- 1...Sc2
- 2.Sxc2#
- 2.Rb1#
- 1...Sc4
- 2.Sc2#
- 2.Rb1#
- 1...Sb5
- 2.Rb1#
- 1...Kxb2
- 1.Qb8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(b);N_GUARD::R1(A),XS(b)
- S(b);N_GUARD::R1(A)
- S(c);N_GUARD,XQ(E)::R1(A)
- Tries
- Try
- Q(E);P_PINS(b)
- Threat
- R1(A)
- Vars
- S(c);N_GUARD,N_SPINS(b)::R1(A),XS(c)
- Refutation
- K(a);N_SPINS(b),S_FLIGHT,XR(A)
- Try
- Q(E);
- Vars
- S(b);N_GUARD,XQ(E)::R1(A)
- S(c);N_GUARD::R1(A),XS(c)
- S(c);N_GUARD::R1(A)
- Refutation
- K(a);S_FLIGHT,XR(A)
- Try
- Q(E);
- Vars
- S(b);N_GUARD,XQ(E)::R1(A)
- S(b);N_GUARD::R1(A),XS(b)
- S(b);N_GUARD::R1(A)
- S(c);N_GUARD::R1(A)
- Refutation
- K(a);S_FLIGHT,XR(A)
- Try
- Q(E);P_PINS(c)
- Threat
- R1(A)
- Vars
- S(b);N_GUARD,N_SPINS(c)::R1(A),XS(b)
- Refutation
- K(a);N_SPINS(c),S_FLIGHT,XR(A)
- Try
- Q(E);
- Vars
- S(c);N_GUARD,XQ(E)::R1(A)
- S(b);N_GUARD::R1(A)
- S(c);N_GUARD::R1(A),XS(c)
- S(c);N_GUARD::R1(A)
- Refutation
- K(a);S_FLIGHT,XR(A)
- Try
- Q(E);P_PINS(c)
- Threat
- R1(A)
- Vars
- S(b);N_GUARD,N_SPINS(c)::R1(A),XS(b)
- Refutation
- K(a);N_SPINS(c),S_FLIGHT,XR(A)
- Try
- Q(E);P_PINS(c)
- Threat
- R1(A)
- Vars
- S(b);N_GUARD,N_SPINS(c)::R1(A),XS(b)
- Refutation
- K(a);N_SPINS(c),S_FLIGHT,XR(A)
- Try
- Q(E);
- Vars
- S(b);N_GUARD::R1(A),XS(b)
- S(b);N_GUARD::R1(A)
- S(c);N_GUARD::R1(A),XS(c)
- S(c);N_GUARD::R1(A)
- Refutation
- K(a);S_FLIGHT,XR(A)
- Try
- Q(E);
- Vars
- S(b);N_GUARD::R1(A),XS(b)
- S(b);N_GUARD::R1(A)
- S(c);N_GUARD::R1(A)
- Refutation
- K(a);S_FLIGHT,XR(A)
- Try
- Q(E);
- Vars
- S(b);N_GUARD::R1(A),XS(b)
- S(b);N_GUARD::R1(A)
- S(c);N_GUARD::R1(A)
- Refutation
- K(a);S_FLIGHT,XR(A)
- Try
- P(G);
- Vars
- S(c);N_GUARD,XQ(E)::R1(A)
- S(b);N_GUARD::R1(A),XS(b)
- S(b);N_GUARD::R1(A)
- Refutation
- K(a);S_FLIGHT,XR(A)
- Try
- P(H);
- Vars
- S(c);N_GUARD,XQ(E)::R1(A)
- S(b);N_GUARD::R1(A),XS(b)
- S(b);N_GUARD::R1(A)
- Refutation
- K(a);S_FLIGHT,XR(A)
- Try
- Actual
- Q(E);
- Vars
- K(a);OGATEB,S_FLIGHT,XR(A)::QAB(E),XP(d)
- S(b);N_GUARD::R1(A),XS(b)
- S(b);N_GUARD::R1(A)
- S(c);N_GUARD::R1(A)
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).