MESON Chess Problem Database
Problem Display
PID: 179112 (8/p2NNp2/r1Q5/q1b1P1p1/p1r1Bkp1/8/b2P1pK1/2B2R2 w - - 0 1)
Jonsson, Nils Gustav Helmer
Arbeidermagasinet, 1939
#2
9 + 12
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Rb4
- 2.d4#
- 1...Rd4
- 2.Rxf2#
- 1...Ba3
- 2.Rxf2#
- 1...Be3
- 2.dxe3#
- 1...Bb4
- 2.Rxf2#
- 1...Bd6
- 2.Rxf2#
- 1...Bxe7
- 2.Rxf2#
- 1...f5
- 2.Sg6#
- 1...f6
- 2.Sg6#
- 1...Rb4
- Tries
- 1.Bc2?
- threat
- 2.Sd5#
- 1...Bxe7
- 2.Rxf2#
- 1...g3
- 2.Qf3#
- 1...Rc3
- 2.Qe4#
- 1...Rb4
- 2.d4#
- 1...Rd4
- 2.Rxf2#
- 1...Re4
- 2.Qxe4#
- 1...Ba3
- 2.Rxf2#
- 1...Be3
- 2.dxe3#
- 1...Bb4
- 2.Rxf2#
- 1...Bd4
- 2.Qe4#
- 1...Bb6
- 2.Qf6#
- 1...Bd6
- 2.Rxf2#
- 1...Rxc2!
- threat
- 1.Bd3?
- threat
- 2.Sd5#
- 1...Rxc1
- 2.Qe4#
- 1...Bxe7
- 2.Rxf2#
- 1...g3
- 2.Qf3#
- 1...Rc2
- 2.Qe4#
- 1...Rc3
- 2.Qe4#
- 1...Rd4
- 2.Rxf2#
- 1...Re4
- 2.Qxe4#
- 1...Ba3
- 2.Rxf2#
- 1...Be3
- 2.dxe3#
- 1...Bb4
- 2.Rxf2#
- 1...Bd4
- 2.Qe4#
- 1...Bb6
- 2.Qf6#
- 1...Bd6
- 2.Rxf2#
- 1...Rb4!
- threat
- 1.d3+?
- 1...Qd2
- 2.Sd5#
- 1...Be3
- 2.Rxf2#
- 1...Rxc1!
- 1...Qd2
- 1.d4+?
- 1...Qd2
- 2.Bxd2#
- 1...Rxc1!
- 1...Qd2
- 1.Bc2?
- Keys
- 1.Bh7!
- threat
- 2.Sd5#
- 1...Rxc1
- 2.Qe4#
- 1...Bxe7
- 2.Rxf2#
- 1...g3
- 2.Qf3#
- 1...Rc2
- 2.Qe4#
- 1...Rc3
- 2.Qe4#
- 1...Rb4
- 2.d4#
- 1...Rd4
- 2.Rxf2#
- 1...Re4
- 2.Qxe4#
- 1...Ba3
- 2.Rxf2#
- 1...Be3
- 2.dxe3#
- 1...Bb4
- 2.Rxf2#
- 1...Bd4
- 2.Qe4#
- 1...Bb6
- 2.Qf6#
- 1...Bd6
- 2.Rxf2#
- 1...f5
- 2.Sg6#
- threat
- 1.Bh7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 1
- Sets
- R(d);N_GUARD,S_CUTQ(g)::B(A)+P(C)
- R(d);S_CUTB(h)::R(B),XP(b)
- B(h);N_GUARD::R(B),XP(b)
- B(h);OGATE::P(C),XB(h)
- B(h);N_GUARD,XS(I)::R(B),XP(b)
- P(l);N_GUARD::S(I)
- Tries
- Try
- B(E);
- Threat
- S(I)
- Vars
- B(h);N_GUARD,XS(I)::R(B),XP(b)
- P(f);N_GUARD::QAR1(G)
- R(d);N_GUARD::QAR1(G)
- R(d);S_CUTQ(g)::B(A)+P(C)
- R(d);S_CUTB(h)::R(B),XP(b)
- R(d);N_GUARD::QAR1(G),XR(d)
- B(h);N_GUARD::R(B),XP(b)
- B(h);OGATE::P(C),XB(h)
- B(h);S_CUTR(d)::QAR1(G)
- B(h);S_CUTR(j)::QAR2(G)
- Refutation
- R(d);XB(E)
- Try
- B(E);
- Threat
- S(I)
- Vars
- R(d);N_GUARD,XB(A)::QAR1(G)
- B(h);N_GUARD,XS(I)::R(B),XP(b)
- P(f);N_GUARD::QAR1(G)
- R(d);N_GUARD::QAR1(G)
- R(d);S_CUTB(h)::R(B),XP(b)
- R(d);N_GUARD::QAR1(G),XR(d)
- B(h);N_GUARD::R(B),XP(b)
- B(h);OGATE::P(C),XB(h)
- B(h);S_CUTR(d)::QAR1(G)
- B(h);S_CUTR(j)::QAR2(G)
- Refutation
- R(d);
- Try
- P(C);CHECK
- Vars
- Q(g);P_SPINQ(g)::S(I)
- B(h);P_SPINB(h)::R(B),XP(b)
- Refutation
- R(d);XB(A)
- Try
- P(C);CHECK
- Vars
- Q(g);N_GUARD,P_SPINQ(g)::B(A),XQ(g)
- Refutation
- R(d);XB(A)
- Try
- Actual
- B(E);
- Threat
- S(I)
- Vars
- R(d);N_GUARD,XB(A)::QAR1(G)
- B(h);N_GUARD,XS(I)::R(B),XP(b)
- P(f);N_GUARD::QAR1(G)
- R(d);N_GUARD::QAR1(G)
- R(d);N_GUARD,S_CUTQ(g)::B(A)+P(C)
- R(d);S_CUTB(h)::R(B),XP(b)
- R(d);N_GUARD::QAR1(G),XR(d)
- B(h);N_GUARD::R(B),XP(b)
- B(h);OGATE::P(C),XB(h)
- B(h);S_CUTR(d)::QAR1(G)
- B(h);S_CUTR(j)::QAR2(G)
- P(l);N_GUARD,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).