MESON Chess Problem Database
Problem Display
PID: 6590 (b5BB/2rp4/5PK1/2N1kN1Q/1R4P1/1pnpP3/q7/2br4 w - - 0 1)
Keres, Paul P
Chess World (The), 1932
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Qb1
- 2.Qh2#
- 1...Qa1
- 2.Qh2#
- 1...Qh2
- 2.Qxh2#
- 1...Qa3
- 2.Qh2#
- 1...Qa4
- 2.Qh2#
- 1...Qa5
- 2.Qh2#
- 1...Qa6
- 2.Qh2#
- 1...Qa7
- 2.Qh2#
- 1...Re1
- 2.Sxd3#
- 1...Rf1
- 2.Sxd3#
- 1...Rg1
- 2.Sxd3#
- 1...Rh1
- 2.Sxd3#
- 1...Rc6
- 2.Sxd7#
- 1...Rc8
- 2.Sxd7#
- 1...Bb2
- 2.Qh2#
- 1...Bd2
- 2.Sxd3#
- 2.Qh2#
- 1...Bg2
- 2.Qh2#
- 1...Bd5
- 2.f7#
- 1...Sd5
- 2.Re4#
- 1...b2
- 2.Qh2#
- 1...d2
- 2.Sd3#
- 2.Qh2#
- 1...d5
- 2.f7#
- 1...d6
- 2.Sg3#
- 2.Sd4#
- 2.Sh4#
- 2.Sh6#
- 2.Se7#
- 2.Sg7#
- 1...Qb1
- Tries
- 1.Kh6?
- threat
- 2.Qe8#
- 1...Qh2
- 2.Qxh2#
- 1...Qa6
- 2.Qh2#
- 1...Rh1
- 2.Sxd3#
- 1...Rc6
- 2.Sxd7#
- 1...Rc8
- 2.Sxd7#
- 1...Bd5
- 2.f7#
- 1...Sd5
- 2.Re4#
- 1...b2
- 2.Qh2#
- 1...d5
- 2.f7#
- 1...d6
- 2.Sg3#
- 2.Sd4#
- 2.Sh4#
- 2.Se7#
- 1...Bxe3+!
- threat
- 1.Rd4?
- threat
- 2.Sg3#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Se7#
- 2.Sg7#
- 2.f7#
- 1...Rxc5
- 2.Sg3#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Se7#
- 2.Sg7#
- 1...Bxe3
- 2.f7#
- 1...Qf2
- 2.f7#
- 1...Qh2
- 2.Sh4#
- 2.Qxh2#
- 2.f7#
- 1...Qa6
- 2.Sg3#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Se7#
- 2.Sg7#
- 2.Qh2#
- 1...Rf1
- 2.Sxd3#
- 2.f7#
- 1...Rh1
- 2.Sxd3#
- 2.Sh4#
- 2.f7#
- 1...Rc6
- 2.Sxd7#
- 2.Sg3#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Se7#
- 2.Sg7#
- 1...Be4
- 2.f7#
- 1...Bd5
- 2.f7#
- 1...Sd5
- 2.Re4#
- 1...d5
- 2.f7#
- 1...d6
- 2.Sg3#
- 2.Sh4#
- 2.Sxd6#
- 2.Sh6#
- 2.Se7#
- 2.Sg7#
- 2.f7#
- 1...Se4!
- threat
- 1.Qh7?
- threat
- 2.Qe7#
- 1...Qa6
- 2.Qh2#
- 1...Rc6
- 2.Sxd7#
- 1...Bd5
- 2.f7#
- 1...Sd5
- 2.Re4#
- 1...b2
- 2.Qh2#
- 1...d5
- 2.Qxc7#
- 2.f7#
- 1...d6!
- threat
- 1.Kh6?
- Keys
- 1.Kh7!
- threat
- 2.Qe8#
- 1...d5+
- 2.f7#
- 1...d6+
- 2.Se7#
- 1...Qh2
- 2.Qxh2#
- 1...Qa6
- 2.Qh2#
- 1...Rh1
- 2.Sxd3#
- 1...Rc6
- 2.Sxd7#
- 1...Rc8
- 2.Sxd7#
- 1...Bd5
- 2.f7#
- 1...Sd5
- 2.Re4#
- 1...b2
- 2.Qh2#
- threat
- 1.Kh7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 11
- Sets
- Q(c);N_GUARD::QAB(F)
- Q(c);N_GUARD::QAB(F),XQ(c)
- Q(c);N_GUARD,P_PINP(G)::QAB(F)
- R(b);N_GUARD::S(D),XP(f)
- R(b);N_GUARD,P_PINP(C)::S(D),XP(f)
- R(h);N_GUARD,P_PINP(G)::S(D),XP(i)
- R(h);N_GUARD::S(D),XP(i)
- B(a);S_CUTQ(c)::QAB(F)
- B(j);S_CUTQ(c)::QAB(F)
- B(j);SBLOCK::B(J)+P(G)
- S(e);N_GUARD,S_CUTB(j)::R1(B)
- P(d);S_CUTQ(c)::QAB(F)
- P(i);SBLOCK::B(J)+P(G)
- Tries
- Try
- K(H);P-FLIGHT,P_SPINP(A)
- Threat
- QAR(F)
- Vars
- Q(c);N_GUARD,P_PINQ(F)::QAB(F),XQ(c)
- Q(c);N_GUARD::QAB(F)
- R(b);N_GUARD,P_PINQ(F)::S(D),XP(f)
- R(h);N_GUARD::S(D),XP(i)
- B(j);SBLOCK::B(J)+P(G)
- S(e);N_GUARD,S_CUTB(j)::R1(B)
- P(d);S_CUTQ(c)::QAB(F)
- P(i);SBLOCK::B(J)+P(G)
- Refutation
- B(a);CHECK,XP(A)
- Try
- R(B);
- Threat
- DUALS(7)
- Vars
- B(a);XP(A)::B(J)+P(G)
- Q(c);::B(J)+P(G)
- B(j);P_PINS(E)::B(J)+P(G)
- B(j);::B(J)+P(G)
- S(e);N_GUARD,S_CUTB(j)::R1(B)
- P(i);::B(J)+P(G)
- Refutation
- S(e);
- Try
- Q(F);
- Threat
- QAR2(F)
- Vars
- Q(c);N_GUARD,P_PINP(G)::QAB(F)
- R(h);N_GUARD,P_PINP(G)::S(D),XP(i)
- B(j);SBLOCK::B(J)+P(G)
- S(e);N_GUARD,S_CUTB(j)::R1(B)
- P(d);S_CUTQ(c)::QAB(F)
- Refutation
- P(i);
- Try
- Actual
- K(H);S_FLIGHT
- Threat
- QAR(F)
- Vars
- P(i);CHECK,SBLOCK::B(J)+P(G)
- P(i);CHECK,SBLOCK::QAR(F)+S(E)
- Q(c);N_GUARD,P_PINQ(F)::QAB(F),XQ(c)
- Q(c);N_GUARD::QAB(F)
- R(b);N_GUARD,P_PINQ(F)::S(D),XP(f)
- R(h);N_GUARD::S(D),XP(i)
- B(j);SBLOCK::B(J)+P(G)
- S(e);N_GUARD,S_CUTB(j)::R1(B)
- P(d);S_CUTQ(c)::QAB(F)
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).