MESON Chess Problem Database
Problem Display
PID: 246553 (3rr1nB/3Q2q1/2P5/1ppb1Bp1/pPNkPpR1/P3R3/1K1N1P1p/6b1 w - - 0 1)
Segers, Marcel
The Problemist, 1989
#2
13 + 13
SOLUTION
- SOUND
- Sets
- 1...Ra8
- 2.Qxd5#
- 1...Rb8
- 2.Qxd5#
- 1...Rc8
- 2.Qxd5#
- 1...Se7
- 2.Bxg7#
- 1...fxe3
- 2.e5#
- 1...f3
- 2.e5#
- 1...bxc4
- 2.Sf3#
- 1...cxb4
- 2.Qa7#
- 1...Ra8
- Tries
- 1.Bxg7+?
- 1...Re5
- 2.Bxe5#
- 1...Sf6!
- 1...Re5
- 1.Qa7?
- threat
- 2.Qxc5#
- 1...bxc4
- 2.Sf3#
- 1...fxe3!
- threat
- 1.Qxg7+?
- 1...Re5
- 2.Qxe5#
- 1...Sf6!
- 1...Re5
- 1.e5?
- threat
- 2.Rd3#
- 1...bxc4
- 2.Sf3#
- 1...cxb4!
- threat
- 1.Bxg7+?
- Keys
- 1.Kc2!
- threat
- 2.Rd3#
- 1...fxe3
- 2.e5#
- 1...bxc4
- 2.Sf3#
- 1...cxb4
- 2.Qa7#
- threat
- 1.Kc2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 5
- Sets
- R(k);N_GUARD::QAR1(L),XB(h)
- S(m);N_GUARD,S_CUTR(l)::B(M),XQ(j)
- P(e);XR(E)::R(I)+P(H)
- P(e);::R(I)+P(H)
- P(f);SBLOCK,XS(G)::S(B)
- P(g);OGATEB,XP(F)::QAB(L)
- Tries
- Try
- B(M);CHECK,XQ(j)
- Vars
- R(l);N_GUARD,P_SPINR(l)::B(M),XR(l)
- Refutation
- S(m);P_SPINS(m)
- Try
- Q(L);N_PINB(h),P_PINP(g)
- Threat
- QAB1(L),XP(g)
- Vars
- P(f);SBLOCK,XS(G)::S(B)
- Refutation
- P(e);XR(E)
- Try
- Q(L);CHECK,N_PINB(h),XQ(j)
- Vars
- R(l);N_GUARD,P_SPINR(l)::QAB1(L),XR(l)
- Refutation
- S(m);P_SPINS(m)
- Try
- P(H);N_PINQ(j),P_PINP(e)
- Threat
- R1(E)
- Vars
- P(f);SBLOCK,XS(G)::S(B)
- Refutation
- P(g);XP(F)
- Try
- Actual
- K(A);P-FLIGHT
- Threat
- R1(E)
- Vars
- P(e);XR(E)::R(I)+P(H)
- P(f);SBLOCK,XS(G)::S(B)
- P(g);OGATEB,XP(F)::QAB(L)
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).