MESON Chess Problem Database
Problem Display
PID: 225140 (2K5/3p1p2/4pR2/6n1/2QpkpNb/4P1Rb/2r1prPq/nB6 w - - 0 1)
Ellerman, Arnoldo
US Problem Bulletin, 1966
#2
8 + 14
SOLUTION
- SOUND
- Sets
- 1...Rxg2
- 2.Rxf4#
- 1...Sb3
- 2.Bxc2#
- 1...Sf3
- 2.Rxf4#
- 1...fxe3
- 2.Rxe3#
- 1...f3
- 2.Rf4#
- 1...e5
- 2.Sxf2#
- 1...Rxg2
- Tries
- 1.Kxd7?
- threat
- 2.Qxd4#
- 1...fxe3
- 2.Rxe3#
- 1...Sb3
- 2.Bxc2#
- 1...Sf3
- 2.Rxf4#
- 1...e5!
- threat
- 1.Kb8?
- threat
- 2.Qxd4#
- 1...Sb3
- 2.Bxc2#
- 1...Sf3
- 2.Rxf4#
- 1...e5
- 2.Sxf2#
- 1...fxe3!
- threat
- 1.Kd8?
- threat
- 2.Qxd4#
- 1...fxe3
- 2.Rxe3#
- 1...Sb3
- 2.Bxc2#
- 1...e5
- 2.Sxf2#
- 1...Sf3!
- threat
- 1.Kxd7?
- Keys
- 1.Kb7!
- threat
- 2.Qxd4#
- 1...fxe3
- 2.Rxe3#
- 1...Sb3
- 2.Bxc2#
- 1...Sf3
- 2.Rxf4#
- 1...e5
- 2.Sxf2#
- threat
- 1.Kb7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 2
- Sets
- R(d);N_GUARD,XP(B)::R1(G),XP(i)
- S(a);N_GUARD::B(A),XR(b)
- S(k);S_CUTR(d)::R1(G),XP(i)
- P(i);OGATE,XP(C)::R1(D),XP(i)
- P(i);S_CUTR(d)::R1(G)
- P(l);SBLOCK::S(F),XR(d)
- Tries
- Try
- K(H);N_SPINQ(E),S_FLIGHT,XP(m)
- Threat
- QAR1(E),XP(g)
- Vars
- P(i);OGATE,XP(C)::R1(D),XP(i)
- S(a);N_GUARD::B(A),XR(b)
- S(k);S_CUTR(d)::R1(G),XP(i)
- Refutation
- P(l);P_PINS(F)
- Try
- K(H);N_SPINQ(E),P-FLIGHT
- Threat
- QAR1(E),XP(g)
- Vars
- S(a);N_GUARD::B(A),XR(b)
- S(k);S_CUTR(d)::R1(G),XP(i)
- P(l);SBLOCK::S(F),XR(d)
- Refutation
- P(i);P_PINR(D),XP(C)
- Try
- K(H);N_SPINQ(E),P-FLIGHT
- Threat
- QAR1(E),XP(g)
- Vars
- P(i);OGATE,XP(C)::R1(D),XP(i)
- S(a);N_GUARD::B(A),XR(b)
- P(l);SBLOCK::S(F),XR(d)
- Refutation
- S(k);P_PINR(G)
- Try
- Actual
- K(H);N_SPINQ(E),S_FLIGHT
- Threat
- QAR1(E),XP(g)
- Vars
- P(i);OGATE,XP(C)::R1(D),XP(i)
- S(a);N_GUARD::B(A),XR(b)
- S(k);S_CUTR(d)::R1(G),XP(i)
- P(l);SBLOCK::S(F),XR(d)
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).