MESON Chess Problem Database
Problem Display
PID: 178013 (8/4K3/1p5p/4k3/1pR1P1Rp/p1P3P1/2p4B/Q2n1n2 w - - 0 1)
Gross, Erwin
Probleemblad, 1979
#2
8 + 9
SOLUTION
- SOUND
- Sets
- 1...Sf2
- 2.cxb4#
- 1...Sde3
- 2.cxb4#
- 1...Sd2
- 2.gxh4#
- 1...Sfe3
- 2.gxh4#
- 1...b5
- 2.Rc5#
- 1...h5
- 2.Rg5#
- 1...Sf2
- Tries
- 1.Bg1?
- threat
- 2.Bd4#
- 1...Sf2
- 2.cxb4#
- 1...Sde3
- 2.cxb4#
- 1...Sfe3!
- threat
- 1.Rd4?
- threat
- 2.Rd5#
- 1...Sfe3
- 2.gxh4#
- 1...Sde3!
- threat
- 1.Rf4?
- threat
- 2.Rf5#
- 1...Sde3
- 2.cxb4#
- 1...Sfe3!
- threat
- 1.Qc1?
- threat
- 2.Qf4#
- 1...Sfe3
- 2.gxh4#
- 1...Sd2
- 2.gxh4#
- 1...Sde3!
- threat
- 1.cxb4+?
- 1...Sc3
- 2.Qxc3#
- 1...Sb2!
- 1...Sc3
- 1.gxh4+?
- 1...Sg3
- 2.Bxg3#
- 1...Sxh2!
- 1...Sg3
- 1.Bg1?
- Keys
- 1.Rxb4!
- threat
- 2.Rb5#
- 1...Sxc3
- 2.Qxc3#
- 1...Sde3
- 2.c4#
- 1...Sfe3
- 2.gxh4#
- 1...b5
- 2.Rxb5#
- threat
- 1.Rxb4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- S(a);N_GUARD::QAB(A)+P(C),XP(e)
- S(b);N_GUARD::B(B)+P(D),XP(f)
- P(h);N_GUARD::R(E)
- P(i);N_GUARD::R(G)
- Tries
- Try
- B(B);
- Threat
- B(B)
- Vars
- S(a);N_GUARD::QAB(A)+P(C),XP(e)
- Refutation
- S(b);
- Try
- R(E);
- Threat
- R1(E)
- Vars
- S(b);N_GUARD::B(B)+P(D),XP(f)
- Refutation
- S(a);
- Try
- R(G);
- Threat
- R1(G)
- Vars
- S(a);N_GUARD::QAB(A)+P(C),XP(e)
- Refutation
- S(b);
- Try
- Q(A);
- Threat
- QAB1(A)
- Vars
- S(b);N_GUARD::B(B)+P(D),XP(f)
- Refutation
- S(a);
- Try
- P(C);CHECK,XP(e)
- Vars
- S(a);N_GUARD,P_SPINS(a)::QAB(A),XS(a)
- Refutation
- S(a);P_SPINS(a)
- Try
- P(D);CHECK,XP(f)
- Vars
- S(b);N_GUARD,P_SPINS(b)::B(B),XS(b)
- Refutation
- S(b);XB(B)
- Try
- Actual
- R(E);XP(e)
- Threat
- R(E)
- Vars
- S(a);OGATE,P_SPINS(a),XP(C)::QAB(A),XS(a)
- S(a);N_GUARD::QAB(A)+P(C)
- S(b);N_GUARD::B(B)+P(D),XP(f)
- P(h);::R(E),XP(h)
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).