MESON Chess Problem Database
Problem Display
PID: 71878 (6b1/8/5pB1/N1Pk3n/R2P4/K1pN1rp1/p3RbQn/B7 w - - 0 1)
Pries, Albert
1st Comm., Die Schwalbe, 1951
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Be6
- 2.Be4#
- 1...Bf7
- 2.Bxf7#
- 1...Bh7
- 2.Bf7#
- 1...Sf1
- 2.Qxf3#
- 1...Sg4
- 2.Qxf3#
- 1...Sf4
- 2.Sxf4#
- 1...Sg7
- 2.Sf4#
- 1...f5
- 2.Re5#
- 1...Be6
- Tries
- 1.Re1?
- 1...Bxe1
- 2.Qxa2#
- 1...Bxd4
- 2.Qxa2#
- 1...Be3
- 2.Qxa2#
- 1...Bg1
- 2.Qxa2#
- 1...Be6
- 2.Be4#
- 1...Bf7
- 2.Bxf7#
- 1...Bh7
- 2.Bf7#
- 1...Sf1
- 2.Qxf3#
- 1...Sg4
- 2.Qxf3#
- 1...Sf4
- 2.Sxf4#
- 1...Sg7
- 2.Sf4#
- 1...f5
- 2.Re5#
- 1...c2!
- 1...Bxe1
- 1.Re4?
- threat
- 2.Sb4#
- 1...Rxd3
- 2.Re5#
- 1...Bxd4
- 2.Raxd4#
- 2.Qxa2#
- 1...f5
- 2.Re5#
- 1...c2!
- threat
- 1.Re7?
- threat
- 2.Be4#
- 1...Bh7
- 2.Bf7#
- 1...f5
- 2.Re5#
- 1...Be6!
- threat
- 1.Re8?
- threat
- 2.Be4#
- 1...Bh7
- 2.Bf7#
- 1...f5
- 2.Re5#
- 1...Be6!
- threat
- 1.Qh3?
- threat
- 2.Be4#
- 2.Qd7#
- 1...Re3
- 2.Qd7#
- 1...Rf4
- 2.Qd7#
- 1...Rf5
- 2.Qxf5#
- 1...Be3
- 2.Qd7#
- 1...Be6
- 2.Be4#
- 2.Qxe6#
- 1...Bh7
- 2.Bf7#
- 2.Qe6#
- 2.Qd7#
- 1...f5
- 2.Re5#
- 1...Sg4!
- threat
- 1.Re1?
- Keys
- 1.Re3!
- 1...Bxe3
- 2.Qxa2#
- 1...Be1
- 2.Qxa2#
- 1...Bg1
- 2.Qxa2#
- 1...Be6
- 2.Be4#
- 1...Bf7
- 2.Bxf7#
- 1...Bh7
- 2.Bf7#
- 1...Sf1
- 2.Qxf3#
- 1...Sg4
- 2.Qxf3#
- 1...Sf4
- 2.Sxf4#
- 1...Sg7
- 2.Sf4#
- 1...c2
- 2.Sb4#
- 1...f5
- 2.Re5#
- 1...Bxe3
- 1.Re3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- B(j);SBLOCK::B(J)
- B(j);N_GUARD::B(J),XB(j)
- B(j);N_GUARD::B(J)
- S(c);N_GUARD::QAB(C),XR(e)
- S(h);N_GUARD::S(E),XS(h)
- S(h);N_GUARD::S(E)
- P(i);N_GUARD::R1(B)
- Tries
- Try
- R(B);
- Vars
- B(b);OGATE,XR(B)::QAB(C),XP(a)
- B(b);OGATE,XP(G)::QAB(C),XP(a)
- B(b);OGATE::QAB(C),XP(a)
- B(j);SBLOCK::B(J)
- B(j);N_GUARD::B(J),XB(j)
- B(j);N_GUARD::B(J)
- S(c);N_GUARD::QAB(C),XR(e)
- S(h);N_GUARD::S(E),XS(h)
- S(h);N_GUARD::S(E)
- P(i);N_GUARD::R1(B)
- Refutation
- P(d);P_PINS(E)
- Try
- R(B);N_PINR(e)
- Threat
- S(E)
- Vars
- R(e);XS(E)::QAB(C)+R(B),DCHECK
- P(i);N_GUARD::R1(B)
- Refutation
- P(d);P_PINS(E)
- Try
- R(B);
- Threat
- B(J)
- Vars
- B(j);N_GUARD::B(J)
- P(i);N_GUARD::R1(B)
- Refutation
- B(j);
- Try
- R(B);
- Threat
- B(J)
- Vars
- B(j);N_GUARD::B(J)
- P(i);N_GUARD::R1(B)
- Refutation
- B(j);
- Try
- Q(C);N_PINR(e)
- Threat
- DUALS(2)
- Vars
- R(e);::QAR2(C)
- R(e);N_GUARD::QAR2(C),XR(e)
- B(b);::QAR2(C)
- P(i);N_GUARD::R1(B)
- Refutation
- S(c);
- Try
- Actual
- R(B);
- Vars
- B(b);OGATE,XR(B)::QAB(C),XP(a)
- B(b);OGATE::QAB(C),XP(a)
- B(j);SBLOCK::B(J)
- B(j);N_GUARD::B(J),XB(j)
- B(j);N_GUARD::B(J)
- S(c);N_GUARD::QAB(C),XR(e)
- S(h);N_GUARD::S(E),XS(h)
- S(h);N_GUARD::S(E)
- P(d);::S(E)
- P(i);N_GUARD::R1(B)
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).