MESON Chess Problem Database
Problem Display
PID: 22171 (1R2r3/B2N4/N1p5/p3p3/P1kn2qR/8/3PP3/3K1B1Q w - - 0 1)
Segers, Marcel
1st Prize, Xadrez Brasileiro, 1934
#2
11 + 7
| 3098 | FIDE Album (1914-1944) (I) | 1971 |
| 102 | Probleemblad | 2007 |
SOLUTION
- SOUND
- Sets
- 1...Qxe2+
- 2.Bxe2#
- 1...Qh3
- 2.Qxc6#
- 1...Qf5
- 2.Qxc6#
- 1...Qh5
- 2.Qxc6#
- 1...Qe6
- 2.e3#
- 1...Qxd7
- 2.e3#
- 1...Qg1
- 2.Qxc6#
- 1...Qg3
- 2.Qxc6#
- 2.e3#
- 1...Qg5
- 2.Qxc6#
- 2.e3#
- 1...Qg7
- 2.Qxc6#
- 2.e3#
- 1...Qg8
- 2.Qxc6#
- 2.e3#
- 1...Rc8
- 2.Sxe5#
- 1...Rd8
- 2.Sxe5#
- 1...Rf8
- 2.Sxe5#
- 1...Rg8
- 2.Sxe5#
- 1...Rh8
- 2.Sxe5#
- 1...Sc2
- 2.Qxc6#
- 1...Sxe2
- 2.Bxe2#
- 1...Sf3
- 2.e4#
- 1...Sf5
- 2.Qxc6#
- 1...Se6
- 2.Sxe5#
- 1...Qxe2+
- Tries
- 1.Rb1?
- threat
- 2.Sb6#
- 1...Qxe2+
- 2.Bxe2#
- 1...Qxd7
- 2.e3#
- 1...Sxe2
- 2.Bxe2#
- 1...Sf3
- 2.e4#
- 1...Rb8
- 2.Sxe5#
- 1...Sc2
- 2.Qxc6#
- 1...Sb5
- 2.Qxc6#
- 1...Sf5
- 2.Qxc6#
- 1...Se6
- 2.Sxe5#
- 1...Sb3!
- threat
- 1.Qf3?
- threat
- 2.Sb6#
- 1...Qxd7
- 2.Qb3#
- 2.e3#
- 1...Rxb8
- 2.Sxe5#
- 1...Sxe2
- 2.Bxe2#
- 2.Qb3#
- 1...Sxf3
- 2.e4#
- 1...Sc2
- 2.Qxc6#
- 2.Qb3#
- 2.Qd3#
- 2.e3#
- 2.e4#
- 1...Sb3
- 2.Qxb3#
- 2.Qd3#
- 2.e3#
- 2.e4#
- 1...Sb5
- 2.Qd3#
- 2.e4#
- 1...Sf5
- 2.Qxc6#
- 2.Qb3#
- 2.Qd3#
- 2.e3#
- 2.e4#
- 1...Se6
- 2.Sxe5#
- 2.Qb3#
- 2.Qd3#
- 2.e3#
- 2.e4#
- 1...Qxf3!
- threat
- 1.Rb1?
- Keys
- 1.Rb2!
- threat
- 2.Sb6#
- 1...Qxe2+
- 2.Bxe2#
- 1...Qxd7
- 2.e3#
- 1...Sxe2
- 2.Bxe2#
- 1...Sf3
- 2.e4#
- 1...Rb8
- 2.Sxe5#
- 1...Sc2
- 2.Qxc6#
- 1...Sb3
- 2.Rc2#
- 1...Sb5
- 2.Qxc6#
- 1...Sf5
- 2.Qxc6#
- 1...Se6
- 2.Sxe5#
- threat
- 1.Rb2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 10
- Sets
- Q(c);CHECK,OGATE,P_SPINQ(c),P_SPINS(b),XP(E)::B(B),XQ(c)
- Q(c);N_PINP(E),P_SPINS(b)::QAR2(C),XP(f)
- Q(c);P_SPINS(b)::QAR2(C),XP(f)
- Q(c);N_PINP(E),P_SPINS(b)::B(B)+P(E)
- Q(c);N_PINP(E),P_SPINS(b),XS(J)::B(B)+P(E)
- Q(c);N_PINP(E),P_PINB(B),P_SPINS(b)::QAR2(C),XP(f)
- R(g);N_GUARD::S(J),XP(e)
- S(b);N_GUARD,P_SPINQ(c)::QAR2(C),XP(f)
- S(b);OGATE,P_SPINQ(c),P_SPINS(b),XP(E)::B(B),XS(b)
- S(b);N_PINP(E),P_SPINQ(c)::B(B)+P(E)
- S(b);P_SPINQ(c),S_CUTR(g)::S(J),XP(e)
- Tries
- Try
- R(K);
- Threat
- S(J)
- Vars
- Q(c);CHECK,OGATE,P_SPINQ(c),P_SPINS(b),XP(E)::B(B),XQ(c)
- Q(c);N_PINP(E),P_SPINS(b),XS(J)::B(B)+P(E)
- S(b);OGATE,P_SPINQ(c),P_SPINS(b),XP(E)::B(B),XS(b)
- S(b);N_PINP(E),P_SPINQ(c)::B(B)+P(E)
- R(g);N_GUARD::S(J),XP(e)
- S(b);N_GUARD,P_SPINQ(c)::QAR2(C),XP(f)
- S(b);P_SPINQ(c),S_CUTR(g)::S(J),XP(e)
- Refutation
- S(b);P_SPINQ(c)
- Try
- Q(C);N_SPINP(E)
- Threat
- S(J)
- Vars
- R(g);N_GUARD,XR(K)::S(J),XP(e)
- S(b);N_GUARD,P_SPINQ(c),XQ(C)::B(B)+P(E)
- Refutation
- Q(c);P_PINP(E),P_SPINS(b),XQ(C)
- Try
- Actual
- R(K);
- Threat
- S(J)
- Vars
- Q(c);CHECK,OGATE,P_SPINQ(c),P_SPINS(b),XP(E)::B(B),XQ(c)
- Q(c);N_PINP(E),P_SPINS(b),XS(J)::B(B)+P(E)
- S(b);OGATE,P_SPINQ(c),P_SPINS(b),XP(E)::B(B),XS(b)
- S(b);N_PINP(E),P_SPINQ(c)::B(B)+P(E)
- R(g);N_GUARD::S(J),XP(e)
- S(b);N_GUARD,P_SPINQ(c)::QAR2(C),XP(f)
- S(b);N_GUARD,P_SPINQ(c),SBLOCK::R(K)
- S(b);P_SPINQ(c),S_CUTR(g)::S(J),XP(e)
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).