MESON Chess Problem Database
Problem Display
PID: 157697 (B2K4/b2p2p1/1p1k4/2N1R3/r3pP2/1bB1pn2/2R4Q/8 w - - 0 1)
Tritten, Pierre
Best Problems, 2008
#2
8 + 10
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sxe4#
- 1...Ra2
- 2.Sxe4#
- 1...Ra3
- 2.Sxe4#
- 1...Rc4
- 2.Rd5#
- 1...Ra5
- 2.Sxe4#
- 1...Ra6
- 2.Sxe4#
- 1...Bxc2
- 2.Rd5#
- 1...Bc4
- 2.Sxe4#
- 1...Bd5
- 2.Rxd5#
- 1...Sd4
- 2.Sxe4#
- 1...Sxe5
- 2.Bxe5#
- 1...Ra1
- Tries
- 1.Ba1?
- threat
- 2.Sb7#
- 1...Bxc2
- 2.Rd5#
- 1...Sxe5
- 2.Bxe5#
- 2.fxe5#
- 1...Rc4
- 2.Rd5#
- 1...Bc4
- 2.Sxe4#
- 1...Bd5
- 2.Rxd5#
- 1...bxc5!
- threat
- 1.Be1?
- threat
- 2.Sb7#
- 1...Bxc2
- 2.Rd5#
- 1...Sxe5
- 2.fxe5#
- 1...Rc4
- 2.Rd5#
- 1...Bc4
- 2.Sxe4#
- 1...Bd5
- 2.Rxd5#
- 1...bxc5!
- threat
- 1.Bb2?
- threat
- 2.Sb7#
- 1...Bxc2
- 2.Rd5#
- 1...Sxe5
- 2.Bxe5#
- 2.fxe5#
- 1...Rc4
- 2.Rd5#
- 1...Bc4
- 2.Sxe4#
- 1...Bd5
- 2.Rxd5#
- 1...bxc5!
- threat
- 1.Bd2?
- threat
- 2.Sb7#
- 1...Bxc2
- 2.Rd5#
- 1...Sxe5
- 2.fxe5#
- 1...Rc4
- 2.Rd5#
- 1...Bc4
- 2.Sxe4#
- 1...Bd5
- 2.Rxd5#
- 1...bxc5!
- threat
- 1.Bb4?
- threat
- 2.Sxa4#
- 2.Sxe4#
- 2.Sb7#
- 1...Rxb4
- 2.Sb7#
- 1...Bxc2
- 2.Sxa4#
- 2.Sxe4#
- 2.Rd5#
- 1...Sxe5
- 2.fxe5#
- 1...Ra1
- 2.Sxb3#
- 2.Sd3#
- 2.Sa4#
- 2.Sxe4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 2.Sxd7#
- 1...Ra2
- 2.Sxb3#
- 2.Sd3#
- 2.Sa4#
- 2.Sxe4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 2.Sxd7#
- 1...Ra3
- 2.Sxb3#
- 2.Sd3#
- 2.Sa4#
- 2.Sxe4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 2.Sxd7#
- 1...Ra5
- 2.Sxe4#
- 2.Sb7#
- 1...Ra6
- 2.Sxb3#
- 2.Sd3#
- 2.Sa4#
- 2.Sxe4#
- 2.Sxa6#
- 2.Se6#
- 2.Sb7#
- 2.Sxd7#
- 1...Bc4
- 2.Sxa4#
- 2.Sxe4#
- 1...b5
- 2.Sxe4#
- 2.Sb7#
- 1...bxc5!
- threat
- 1.Bd4?
- threat
- 2.Sxe4#
- 2.Sb7#
- 1...Rxd4
- 2.Sb7#
- 1...Bxc2
- 2.Rd5#
- 1...Sxe5
- 2.Bxe5#
- 2.fxe5#
- 1...Rc4
- 2.Sxe4#
- 2.Rd5#
- 1...Bc4
- 2.Sxe4#
- 1...Bd5
- 2.Rxd5#
- 1...Sd2
- 2.Sb7#
- 1...Sg5
- 2.Sb7#
- 1...bxc5!
- threat
- 1.Qh3?
- threat
- 2.Qxd7#
- 1...Sxe5
- 2.Bxe5#
- 1...Bd5
- 2.Rxd5#
- 1...Be6!
- threat
- 1.Qh6+?
- 1...Be6
- 2.Rd5#
- 1...g6
- 2.Qf8#
- 1...gxh6!
- 1...Be6
- 1.f5?
- threat
- 2.Rd5#
- 1...Sxe5
- 2.Bxe5#
- 2.Qxe5#
- 1...Bd5
- 2.Rxd5#
- 1...Sxh2!
- threat
- 1.Ba1?
- Keys
- 1.Ba5!
- threat
- 2.Sb7#
- 1...Bxc2
- 2.Rd5#
- 1...Sxe5
- 2.fxe5#
- 1...bxc5
- 2.Bc7#
- 1...Rc4
- 2.Rd5#
- 1...Bc4
- 2.Sxe4#
- 1...Bd5
- 2.Rxd5#
- threat
- 1.Ba5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- R(d);N_GUARD::S(E),XP(e)
- R(d);S_CUTB(a)::R1(F)
- B(a);N_GUARD,XR(A)::R1(F)
- B(a);S_CUTR(d)::S(E),XP(e)
- B(a);N_GUARD::R1(F),XB(a)
- S(c);S_CUTR(d)::S(E),XP(e)
- S(c);OGATE,XR(F)::B(C),XS(c)
- Tries
- Try
- B(C);
- Threat
- S(E)
- Vars
- B(a);N_GUARD,XR(A)::R1(F)
- R(d);S_CUTB(a)::R1(F)
- B(a);S_CUTR(d)::S(E),XP(e)
- B(a);N_GUARD::R1(F),XB(a)
- Refutation
- P(f);XS(E)
- Try
- B(C);
- Threat
- S(E)
- Vars
- B(a);N_GUARD,XR(A)::R1(F)
- S(c);OGATE,XR(F)::P(D),XS(c)
- R(d);S_CUTB(a)::R1(F)
- B(a);S_CUTR(d)::S(E),XP(e)
- B(a);N_GUARD::R1(F),XB(a)
- Refutation
- P(f);XS(E)
- Try
- B(C);
- Threat
- S(E)
- Vars
- B(a);N_GUARD,XR(A)::R1(F)
- R(d);S_CUTB(a)::R1(F)
- B(a);S_CUTR(d)::S(E),XP(e)
- B(a);N_GUARD::R1(F),XB(a)
- Refutation
- P(f);XS(E)
- Try
- B(C);
- Threat
- S(E)
- Vars
- B(a);N_GUARD,XR(A)::R1(F)
- S(c);OGATE,XR(F)::P(D),XS(c)
- R(d);S_CUTB(a)::R1(F)
- B(a);S_CUTR(d)::S(E),XP(e)
- B(a);N_GUARD::R1(F),XB(a)
- Refutation
- P(f);XS(E)
- Try
- B(C);
- Threat
- DUALS(3)
- Vars
- R(d);XB(C)::S(E)
- S(c);OGATE,XR(F)::P(D),XS(c)
- Refutation
- P(f);P_SPINP(f),XS(E)
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- R(d);XB(C)::S(E)
- B(a);N_GUARD,XR(A)::R1(F)
- B(a);::S(E),XP(e)
- B(a);N_GUARD::R1(F),XB(a)
- S(c);::S(E)
- Refutation
- P(f);XS(E)
- Try
- Q(B);
- Threat
- QAR1(B),XP(i)
- Vars
- S(c);OGATE,XR(F)::B(C),XS(c)
- B(a);N_GUARD::R1(F),XB(a)
- Refutation
- B(a);
- Try
- Q(B);CHECK
- Vars
- B(a);P_SPINB(a)::R1(F)
- P(j);OGATE,P_SPINP(j)::QAB(B)
- Refutation
- P(j);XQ(B)
- Try
- P(D);
- Threat
- QAB(B)+R(F),DCHECK
- Vars
- B(a);::QAB(B)+R(F),DCHECK,XB(a)
- Refutation
- S(c);XQ(B)
- Try
- Actual
- B(C);
- Threat
- S(E)
- Vars
- B(a);N_GUARD,XR(A)::R1(F)
- S(c);OGATE,XR(F)::P(D),XS(c)
- P(f);OGATE,XS(E)::B(C)
- R(d);S_CUTB(a)::R1(F)
- B(a);S_CUTR(d)::S(E),XP(e)
- B(a);N_GUARD::R1(F),XB(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).