MESON Chess Problem Database
Problem Display
PID: 235795 (br1n1N1K/3BQp2/1PpPpN2/B1kr2Rp/1R1nP1q1/3P4/8/b7 w - - 0 1)
Retter, Yosef
Variantim, 2016
#2
12 + 12
SOLUTION
- SOUND
- Sets
- 1...Qxe4
- 2.Sxe4#
- 1...Re5
- 2.Rxe5#
- 1...Sb5
- 2.Rc4#
- 1...Qxe4
- Tries
- 1.Bxe6?
- threat
- 2.S6d7#
- 2.S8d7#
- 2.d7#
- 1...Qxg5
- 2.S6d7#
- 2.S8d7#
- 1...S4xe6
- 2.Sd7#
- 2.d7#
- 1...S8xe6
- 2.Sd7#
- 2.d7#
- 1...Qf5
- 2.S6d7#
- 2.S8d7#
- 1...Qg3
- 2.S6d7#
- 2.S8d7#
- 1...Qf4
- 2.S6d7#
- 2.S8d7#
- 1...Rb7
- 2.d7#
- 1...Sc2
- 2.Sd7#
- 2.d7#
- 1...Se2
- 2.Sd7#
- 2.d7#
- 1...Sb3
- 2.Sd7#
- 2.d7#
- 1...Sf3
- 2.Sd7#
- 2.d7#
- 1...Sb5
- 2.Sd7#
- 2.Rc4#
- 1...Sf5
- 2.Sd7#
- 1...Sb7
- 2.Sd7#
- 1...Qxe6!
- threat
- 1.Bc8?
- threat
- 2.S6d7#
- 2.S8d7#
- 2.d7#
- 1...Qxg5
- 2.S6d7#
- 2.S8d7#
- 1...Qf5
- 2.S6d7#
- 2.S8d7#
- 1...Qg3
- 2.S6d7#
- 2.S8d7#
- 1...Qf4
- 2.S6d7#
- 2.S8d7#
- 1...Rb7
- 2.d7#
- 1...Sc2
- 2.Sd7#
- 2.d7#
- 1...Se2
- 2.Sd7#
- 2.d7#
- 1...Sb3
- 2.Sd7#
- 2.d7#
- 1...Sf3
- 2.Sd7#
- 2.d7#
- 1...Sb5
- 2.Sd7#
- 2.Rc4#
- 1...Sf5
- 2.Sd7#
- 1...Sb7
- 2.S6d7#
- 2.S8d7#
- 1...e5!
- threat
- 1.Be8?
- threat
- 2.S6d7#
- 2.S8d7#
- 2.d7#
- 1...Qxg5
- 2.S6d7#
- 2.S8d7#
- 1...Qf5
- 2.S6d7#
- 2.S8d7#
- 1...Qg3
- 2.S6d7#
- 2.S8d7#
- 1...Qf4
- 2.S6d7#
- 2.S8d7#
- 1...Rb7
- 2.d7#
- 1...Sc2
- 2.Sd7#
- 2.d7#
- 1...Se2
- 2.Sd7#
- 2.d7#
- 1...Sb3
- 2.Sd7#
- 2.d7#
- 1...Sf3
- 2.Sd7#
- 2.d7#
- 1...Sb5
- 2.Sd7#
- 2.Rc4#
- 1...Sf5
- 2.Sd7#
- 1...Sb7
- 2.S6d7#
- 2.S8d7#
- 1...e5!
- threat
- 1.Bxe6?
- Keys
- 1.Bxc6!
- threat
- 2.Rc4#
- 1...Kxc6
- 2.Qc7#
- 1...Bxc6
- 2.d7#
- 1...S4xc6
- 2.Sd7#
- 1...S8xc6
- 2.Sd7#
- threat
- 1.Bxc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 3
- Sets
- Q(c);XP(C)::S(H),XQ(c)
- R(e);OGATEB::R(E),XR(e)
- S(b);P_PINS(H),SBLOCK::R1(B)
- Tries
- Try
- B(I);XP(h)
- Threat
- DUALS(3)
- Vars
- R(k);::QAB(J)+P(G)
- S(b);N_SPINR(e),P_PINS(H)::S(K)
- S(l);P_PINS(K)::S(H)
- Refutation
- Q(c);XB(I)
- Try
- B(I);
- Threat
- DUALS(3)
- Vars
- R(k);::QAB(J)+P(G)
- S(b);N_SPINR(e),P_PINS(H)::S(K)
- Refutation
- P(h);N_SPINR(e)
- Try
- B(I);
- Threat
- DUALS(3)
- Vars
- R(k);::QAB(J)+P(G)
- S(b);N_SPINR(e),P_PINS(H)::S(K)
- Refutation
- P(h);N_SPINR(e)
- Try
- Actual
- B(I);XP(g)
- Threat
- R1(B)
- Vars
- K(d);N_SPINR(e),OGATEB,P-FLIGHT,XB(I)::QAR1(J)
- B(j);SBLOCK,XB(I)::QAB(J)+P(G)
- S(b);P_PINS(H),SBLOCK,XB(I)::S(K)
- S(l);P_PINS(K),SBLOCK,XB(I)::S(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).