MESON Chess Problem Database
Problem Display
PID: 257218 (1R2B1n1/p3pNP1/b3k1p1/r5Pp/3BP3/2Pn1Q2/4Np1b/3R1K2 w - - 0 1)
Albarda, Johannes
Probleemblad, 1947
#2
12 + 11
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qh3#
- 1...Ra2
- 2.Qh3#
- 1...Ra3
- 2.Qh3#
- 1...Ra4
- 2.Qh3#
- 1...Rd5
- 2.exd5#
- 1...Be5
- 2.Qh3#
- 1...Bd6
- 2.Sd8#
- 1...Bb5
- 2.Qh3#
- 1...Sc5
- 2.Qh3#
- 1...Ra1
- Tries
- 1.Bxf2?
- threat
- 2.Sd4#
- 1...Sxf2
- 2.Bd7#
- 1...Ra4
- 2.Qh3#
- 1...Rd5
- 2.exd5#
- 1...Be5
- 2.Qh3#
- 1...Sc1
- 2.Bd7#
- 1...Se1
- 2.Bd7#
- 1...Sb2
- 2.Bd7#
- 1...Sb4
- 2.Bd7#
- 1...Sc5
- 2.Qh3#
- 1...Se5
- 2.Sd8#
- 1...Sf4!
- threat
- 1.Be3?
- threat
- 2.Sd4#
- 1...Ra4
- 2.Qh3#
- 1...Rd5
- 2.exd5#
- 1...Be5
- 2.Qh3#
- 1...Sc1
- 2.Bd7#
- 1...Se1
- 2.Bd7#
- 1...Sb2
- 2.Bd7#
- 1...Sb4
- 2.Bd7#
- 1...Sc5
- 2.Qh3#
- 1...Se5
- 2.Sd8#
- 1...Sf4!
- threat
- 1.Bc5?
- threat
- 2.Sd4#
- 2.Qh3#
- 1...Rxc5
- 2.Sd4#
- 1...Sxc5
- 2.Qh3#
- 1...Ra4
- 2.Qh3#
- 1...Bg3
- 2.Sd4#
- 1...Be5
- 2.Sd8#
- 2.Qh3#
- 1...Sc1
- 2.Bd7#
- 2.Qh3#
- 1...Se1
- 2.Bd7#
- 2.Qh3#
- 1...Sb2
- 2.Bd7#
- 2.Qh3#
- 1...Sb4
- 2.Bd7#
- 2.Qh3#
- 1...Se5
- 2.Sd8#
- 1...Sf6
- 2.Sd4#
- 1...Sh6
- 2.Sd4#
- 1...Sf4!
- threat
- 1.Be5?
- threat
- 2.Sd4#
- 2.Qh3#
- 1...Rxe5
- 2.Sd4#
- 1...Bxe5
- 2.Qh3#
- 1...Sxe5
- 2.Sd8#
- 1...Ra4
- 2.Qh3#
- 1...Rd5
- 2.Qh3#
- 2.exd5#
- 1...Bg3
- 2.Sd4#
- 1...Sc1
- 2.Bd7#
- 2.Qh3#
- 1...Se1
- 2.Bd7#
- 2.Qh3#
- 1...Sb2
- 2.Bd7#
- 2.Qh3#
- 1...Sb4
- 2.Bd7#
- 2.Qh3#
- 1...Sc5
- 2.Qh3#
- 1...Sf6
- 2.Sd4#
- 1...Sh6
- 2.Sd4#
- 1...Sf4!
- threat
- 1.Bb6?
- threat
- 2.Sd4#
- 1...Ra4
- 2.Qh3#
- 1...Rd5
- 2.exd5#
- 1...Be5
- 2.Qh3#
- 1...Sc1
- 2.Bd7#
- 1...Se1
- 2.Bd7#
- 1...Sb2
- 2.Bd7#
- 1...Sb4
- 2.Bd7#
- 1...Sc5
- 2.Qh3#
- 1...Se5
- 2.Sd8#
- 1...Sf4!
- threat
- 1.Bf6?
- threat
- 2.Sd4#
- 1...Sf4
- 2.Sd8#
- 1...Ra4
- 2.Qh3#
- 1...Rd5
- 2.exd5#
- 1...Be5
- 2.Qh3#
- 1...Sc1
- 2.Sd8#
- 1...Se1
- 2.Sd8#
- 1...Sb2
- 2.Sd8#
- 1...Sb4
- 2.Sd8#
- 1...Sc5
- 2.Sd8#
- 2.Qh3#
- 1...Se5
- 2.Sd8#
- 1...exf6!
- threat
- 1.Rb6+?
- 1...Bd6
- 2.Sd8#
- 1...axb6!
- 1...Bd6
- 1.Bxf2?
- Keys
- 1.Bxa7!
- threat
- 2.Sd4#
- 1...Sf4
- 2.Rb6#
- 1...Ra4
- 2.Qh3#
- 1...Rd5
- 2.exd5#
- 1...Be5
- 2.Qh3#
- 1...Sc1
- 2.Bd7#
- 1...Se1
- 2.Bd7#
- 1...Sb2
- 2.Bd7#
- 1...Sb4
- 2.Bd7#
- 1...Sc5
- 2.Qh3#
- 1...Se5
- 2.Sd8#
- threat
- 1.Bxa7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 5
- Sets
- R(d);N_GUARD,P_PINR(A)::QAB(E)
- R(d);N_GUARD::QAB(E)
- R(d);OGATE::P(G),XR(d)
- B(b);S_CUTR(d)::QAB(E)
- B(b);SBLOCK::S(I)
- B(f);S_CUTR(d)::QAB(E)
- S(c);P_PINS(C),S_CUTR(d)::QAB(E)
- Tries
- Try
- B(F);XP(a)
- Threat
- S(C)
- Vars
- S(c);P_PINS(C),XB(F)::B(L)
- R(d);N_GUARD::QAB(E)
- R(d);OGATE::P(G),XR(d)
- B(b);S_CUTR(d)::QAB(E)
- S(c);P_PINS(C)::B(L)
- S(c);P_PINS(C),S_CUTR(d)::QAB(E)
- S(c);P_PINS(C),SBLOCK::S(I)
- Refutation
- S(c);P_PINS(C)
- Try
- B(F);
- Threat
- S(C)
- Vars
- R(d);N_GUARD::QAB(E)
- R(d);OGATE::P(G),XR(d)
- B(b);S_CUTR(d)::QAB(E)
- S(c);P_PINS(C)::B(L)
- S(c);P_PINS(C),S_CUTR(d)::QAB(E)
- S(c);P_PINS(C),SBLOCK::S(I)
- Refutation
- S(c);P_PINS(C)
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- R(d);XB(F)::S(C)
- S(c);P_PINS(C),XB(F)::QAB(E)
- R(d);::QAB(E)
- B(b);::S(C)
- S(c);P_PINS(C),SBLOCK::S(I)
- S(k);::S(C)
- Refutation
- S(c);P_PINS(C)
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- R(d);XB(F)::S(C)
- B(b);XB(F)::QAB(E)
- S(c);P_PINS(C),SBLOCK,XB(F)::S(I)
- R(d);::QAB(E)
- B(b);::S(C)
- S(c);P_PINS(C)::QAB(E)
- S(k);::S(C)
- Refutation
- S(c);P_PINS(C)
- Try
- B(F);
- Threat
- S(C)
- Vars
- R(d);N_GUARD::QAB(E)
- R(d);OGATE::P(G),XR(d)
- B(b);S_CUTR(d)::QAB(E)
- S(c);P_PINS(C)::B(L)
- S(c);P_PINS(C),S_CUTR(d)::QAB(E)
- S(c);P_PINS(C),SBLOCK::S(I)
- Refutation
- S(c);P_PINS(C)
- Try
- B(F);
- Threat
- S(C)
- Vars
- S(c);P_PINS(C)::S(I)
- R(d);N_GUARD::QAB(E)
- R(d);OGATE::P(G),XR(d)
- B(b);S_CUTR(d)::QAB(E)
- Refutation
- P(j);XB(F)
- Try
- R(K);CHECK
- Vars
- B(b);P_SPINB(b)::S(I)
- Refutation
- P(i);XR(K)
- Try
- Actual
- B(F);XP(i)
- Threat
- S(C)
- Vars
- S(c);P_PINS(C),S_CUTB(b)::R(K)
- R(d);N_GUARD::QAB(E)
- R(d);OGATE::P(G),XR(d)
- B(b);S_CUTR(d)::QAB(E)
- S(c);P_PINS(C)::B(L)
- S(c);P_PINS(C),S_CUTR(d)::QAB(E)
- S(c);P_PINS(C),SBLOCK::S(I)
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).