MESON Chess Problem Database
Problem Display
PID: 267234 (8/7B/b4K2/n2N4/5R1n/r1p1p2r/1NpPkp2/2QR4 w - - 0 1)
Lepage, Roger
Die Schwalbe, 1975
#2
8 + 10
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sxc3#
- 1...Ra2
- 2.Sxc3#
- 1...Ra4
- 2.Sxc3#
- 1...Bd3
- 2.Bxd3#
- 1...Bb7
- 2.Bd3#
- 1...Bc8
- 2.Bd3#
- 1...Sb3
- 2.Sxc3#
- 1...Sc4
- 2.Bd3#
- 1...cxd1Q
- 2.Qxd1#
- 1...cxd1S
- 2.Qxd1#
- 1...cxd1B
- 2.Qxd1#
- 1...cxd1R
- 2.Qxd1#
- 1...f1S
- 2.Re1#
- 1...f1B
- 2.Re1#
- 1...Ra1
- Tries
- 1.dxc3?
- threat
- 2.Qxc2#
- 1...Rxc3
- 2.Sxc3#
- 1...cxd1Q
- 2.Qxd1#
- 1...cxd1S
- 2.Qxd1#
- 1...cxd1B
- 2.Qxd1#
- 1...cxd1R
- 2.Qxd1#
- 1...f1S
- 2.Re1#
- 1...Bd3
- 2.Bxd3#
- 1...Sf3
- 2.Qxe3#
- 1...Sc4
- 2.Bd3#
- 1...Sb3!
- threat
- 1.dxe3?
- threat
- 2.Qxc2#
- 1...cxd1Q
- 2.Qxd1#
- 1...cxd1S
- 2.Qxd1#
- 1...cxd1B
- 2.Qxd1#
- 1...cxd1R
- 2.Qxd1#
- 1...f1S
- 2.Re1#
- 1...Bd3
- 2.Bxd3#
- 1...Sb3
- 2.Sxc3#
- 1...Sc4
- 2.Bd3#
- 1...Sf3!
- threat
- 1.d3?
- threat
- 2.Qxc2#
- 1...Bxd3
- 2.Bxd3#
- 1...cxd1Q
- 2.Qxd1#
- 1...cxd1S
- 2.Qxd1#
- 1...cxd1B
- 2.Qxd1#
- 1...cxd1R
- 2.Qxd1#
- 1...f1S
- 2.Re1#
- 1...Sf3
- 2.Qxe3#
- 1...Sb3
- 2.Sxc3#
- 1...Sc4!
- threat
- 1.dxc3?
- Keys
- 1.d4!
- threat
- 2.Qxc2#
- 1...cxd1Q
- 2.Qxd1#
- 1...cxd1S
- 2.Qxd1#
- 1...cxd1B
- 2.Qxd1#
- 1...cxd1R
- 2.Qxd1#
- 1...f1S
- 2.Re1#
- 1...Bd3
- 2.Bxd3#
- 1...Sf3
- 2.Qxe3#
- 1...Sb3
- 2.Sxc3#
- 1...Sc4
- 2.Bd3#
- threat
- 1.d4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- R(d);N_GUARD::S(F),XP(e)
- B(j);N_GUARD::B(H),XB(j)
- B(j);N_GUARD::B(H)
- S(i);S_CUTR(d)::S(F),XP(e)
- S(i);S_CUTB(j)::B(H)
- P(a);OGATE,XR(B)::QAB1(A),XQ(a)
- P(a);OGATE,XR(B)::QAB1(A),XS(a)
- P(a);OGATE,XR(B)::QAB1(A),XB(a)
- P(a);OGATE,XR(B)::QAB1(A),XR(a)
- P(c);N_GUARD::R1(B)
- Tries
- Try
- P(D);XP(e)
- Threat
- QAR2(A),XP(a)
- Vars
- R(d);XP(D)::S(F),XR(d)
- P(a);OGATE,XR(B)::QAB1(A),XQ(a)
- P(a);OGATE,XR(B)::QAB1(A),XS(a)
- P(a);OGATE,XR(B)::QAB1(A),XB(a)
- P(a);OGATE,XR(B)::QAB1(A),XR(a)
- P(c);N_GUARD::R1(B)
- B(j);N_GUARD::B(H),XB(j)
- S(h);S_CUTR(g)::QAR1(A),XP(f)
- S(i);S_CUTB(j)::B(H)
- Refutation
- S(i);
- Try
- P(D);XP(f)
- Threat
- QAR2(A),XP(a)
- Vars
- P(a);OGATE,XR(B)::QAB1(A),XQ(a)
- P(a);OGATE,XR(B)::QAB1(A),XS(a)
- P(a);OGATE,XR(B)::QAB1(A),XB(a)
- P(a);OGATE,XR(B)::QAB1(A),XR(a)
- P(c);N_GUARD::R1(B)
- B(j);N_GUARD::B(H),XB(j)
- S(i);S_CUTR(d)::S(F),XP(e)
- S(i);S_CUTB(j)::B(H)
- Refutation
- S(h);
- Try
- P(D);
- Threat
- QAR2(A),XP(a)
- Vars
- B(j);OGATE,XP(D)::B(H),XB(j)
- P(a);OGATE,XR(B)::QAB1(A),XQ(a)
- P(a);OGATE,XR(B)::QAB1(A),XS(a)
- P(a);OGATE,XR(B)::QAB1(A),XB(a)
- P(a);OGATE,XR(B)::QAB1(A),XR(a)
- P(c);N_GUARD::R1(B)
- S(h);S_CUTR(g)::QAR1(A),XP(f)
- S(i);S_CUTR(d)::S(F),XP(e)
- Refutation
- S(i);
- Try
- Actual
- P(D);
- Threat
- QAR2(A),XP(a)
- Vars
- P(a);OGATE,XR(B)::QAB1(A),XQ(a)
- P(a);OGATE,XR(B)::QAB1(A),XS(a)
- P(a);OGATE,XR(B)::QAB1(A),XB(a)
- P(a);OGATE,XR(B)::QAB1(A),XR(a)
- P(c);N_GUARD::R1(B)
- B(j);N_GUARD::B(H),XB(j)
- S(h);S_CUTR(g)::QAR1(A),XP(f)
- S(i);S_CUTR(d)::S(F),XP(e)
- S(i);S_CUTB(j)::B(H)
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).