MESON Chess Problem Database
Problem Display
PID: 80718 (5r2/8/qNpnQ1Bn/2B1pr1b/1p2k3/3R1RP1/2P1K1P1/8 w - - 0 1)
di Scala, Pascal
1st Prize, Liberte-Dimanche, 1992
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Qxd3+
- 2.cxd3#
- 1...Qb7
- 2.Re3#
- 2.Rd4#
- 1...Qc8
- 2.Re3#
- 2.Rd4#
- 1...Qa1
- 2.Re3#
- 1...Qa2
- 2.Re3#
- 2.Rd4#
- 1...Qa3
- 2.Rd4#
- 1...Qa4
- 2.Re3#
- 2.Rd4#
- 1...Qa5
- 2.Re3#
- 2.Rd4#
- 1...Qxb6
- 2.Re3#
- 2.Rd4#
- 1...Qa7
- 2.Re3#
- 2.Rd4#
- 1...Qa8
- 2.Re3#
- 2.Rd4#
- 1...Bxf3+
- 2.gxf3#
- 1...Bxg6
- 2.Re3#
- 1...Sc4
- 2.Rd4#
- 2.Qxc6#
- 1...Sb5
- 2.Re3#
- 2.Qxc6#
- 1...Sb7
- 2.Qxc6#
- 1...Sdf7
- 2.Qxc6#
- 1...Sc8
- 2.Qxc6#
- 1...Se8
- 2.Qxc6#
- 1...Sg4
- 2.Rf4#
- 1...Qxd3+
- Tries
- 1.Kd1?
- threat
- 2.Re3#
- 2.Rd4#
- 1...Qxd3+
- 2.cxd3#
- 1...Bxf3+
- 2.gxf3#
- 1...Qc4
- 2.Re3#
- 1...Qa3
- 2.Rd4#
- 1...Sc4
- 2.Rd4#
- 2.Qxc6#
- 1...Sb5
- 2.Re3#
- 2.Qxc6#
- 1...Sg4
- 2.Rd4#
- 2.Rf4#
- 1...Qa1+!
- threat
- 1.Ke1?
- threat
- 2.Rde3#
- 2.Rd4#
- 2.Rfe3#
- 2.Rf4#
- 1...Qxd3
- 2.Rf4#
- 2.cxd3#
- 1...Bxf3
- 2.Re3#
- 2.gxf3#
- 1...Bxg6
- 2.Rde3#
- 2.Rd4#
- 2.Rfe3#
- 1...Qc4
- 2.Rde3#
- 2.Rfe3#
- 2.Rf4#
- 1...Qa3
- 2.Rd4#
- 2.Rfe3#
- 2.Rf4#
- 1...Sc4
- 2.Rd4#
- 2.Rf4#
- 2.Qxc6#
- 1...Sb5
- 2.Rde3#
- 2.Rfe3#
- 2.Rf4#
- 2.Qxc6#
- 1...Sg4
- 2.Rd4#
- 2.Rf4#
- 1...Qa1+!
- threat
- 1.Kd2?
- threat
- 2.Rde3#
- 2.Rd4#
- 2.Rfe3#
- 2.Rf4#
- 1...Qxd3+
- 2.cxd3#
- 1...Bxf3
- 2.Re3#
- 2.Rd4#
- 2.gxf3#
- 1...Bxg6
- 2.Rde3#
- 2.Rd4#
- 2.Rfe3#
- 1...Qc4
- 2.Rde3#
- 2.Rfe3#
- 2.Rf4#
- 1...Qa1
- 2.Rde3#
- 2.Rfe3#
- 2.Rf4#
- 1...Qa3
- 2.Rd4#
- 2.Rfe3#
- 2.Rf4#
- 1...Sb5
- 2.Rde3#
- 2.Rfe3#
- 2.Rf4#
- 2.Qxc6#
- 1...Sg4
- 2.Rd4#
- 2.Rf4#
- 1...Sc4+!
- threat
- 1.Kf2?
- threat
- 2.Re3#
- 2.Rd4#
- 2.Rf4#
- 1...Qxd3
- 2.Rf4#
- 2.cxd3#
- 1...Bxf3
- 2.Re3#
- 2.Rd4#
- 2.gxf3#
- 1...Bxg6
- 2.Re3#
- 2.Rd4#
- 1...Qc4
- 2.Re3#
- 2.Rf4#
- 1...Qa1
- 2.Re3#
- 2.Rf4#
- 1...Qa3
- 2.Rd4#
- 2.Rf4#
- 1...Sc4
- 2.Rd4#
- 2.Rf4#
- 2.Qxc6#
- 1...Sb5
- 2.Re3#
- 2.Rf4#
- 2.Qxc6#
- 1...Sg4+!
- threat
- 1.Sc4?
- threat
- 2.Sd2#
- 2.Sxd6#
- 2.Re3#
- 2.Rd4#
- 2.Qxe5#
- 1...Bxf3+
- 2.gxf3#
- 1...Bxg6
- 2.Sd2#
- 2.Sxd6#
- 2.Rde3#
- 2.Rd4#
- 2.Rfe3#
- 1...Sxc4
- 2.Rd4#
- 1...Qa1
- 2.Sd2#
- 2.Sxd6#
- 2.Re3#
- 1...Qa3
- 2.Sd2#
- 2.Sxd6#
- 2.Rd4#
- 2.Qxe5#
- 1...Rd8
- 2.Sd2#
- 2.Re3#
- 2.Rd4#
- 2.Qxe5#
- 1...Re8
- 2.Sd2#
- 2.Sxd6#
- 2.Re3#
- 2.Rd4#
- 1...Sb5
- 2.Sd2#
- 2.Re3#
- 2.Qxe5#
- 1...Sb7
- 2.Sd2#
- 2.Re3#
- 2.Rd4#
- 2.Qxe5#
- 1...Sdf7
- 2.Sd2#
- 2.Re3#
- 2.Rd4#
- 1...Sc8
- 2.Sd2#
- 2.Re3#
- 2.Rd4#
- 2.Qxe5#
- 1...Se8
- 2.Sd2#
- 2.Re3#
- 2.Rd4#
- 2.Qxe5#
- 1...Sg4
- 2.Sd2#
- 2.Sxd6#
- 2.Rd4#
- 2.Rf4#
- 1...Shf7
- 2.Sd2#
- 2.Re3#
- 2.Rd4#
- 1...Qxc4!
- threat
- 1.Kd1?
- Keys
- 1.Sd7!
- threat
- 2.Qxe5#
- 1...Qxd3+
- 2.cxd3#
- 1...Bxf3+
- 2.gxf3#
- 1...Bxg6
- 2.Re3#
- 1...Qa1
- 2.Re3#
- 1...Re8
- 2.Sf6#
- 1...Sc4
- 2.Rd4#
- 1...Sdf7
- 2.Sf6#
- 1...Sg4
- 2.Rf4#
- 1...Shf7
- 2.Sf6#
- threat
- 1.Sd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 4
- Sets
- Q(f);CHECK,OGATE,P_PINR(E),XR(D)::P(A),XQ(f)
- Q(f);N_PINR(D),P_PINR(E)::R1(D)
- B(e);CHECK,OGATE,XR(E)::P(C),XB(e)
- B(e);N_SPINR(d),OGATE,XB(J)::R1(E)
- S(h);OGATE::QAB(I),XP(g)
- S(i);OGATE::R1(E)
- Tries
- Try
- K(B);N_SPINR(D),P_SPINR(E),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- Q(f);CHECK,OGATE,XR(D)::P(A),XQ(f)
- B(e);CHECK,OGATE,XR(E)::P(C),XB(e)
- Q(f);::R1(D)
- Refutation
- Q(f);CHECK
- Try
- K(B);N_SPINR(D),P-FLIGHT
- Threat
- DUALS(4)
- Refutation
- Q(f);CHECK
- Try
- K(B);N_SPINR(D),P-FLIGHT
- Threat
- DUALS(4)
- Vars
- Q(f);CHECK,OGATE,XR(D)::P(A),XQ(f)
- Refutation
- S(h);CHECK
- Try
- K(B);N_SPINR(D),P-FLIGHT,P_SPINR(E)
- Threat
- DUALS(3)
- Refutation
- S(i);CHECK
- Try
- S(H);N_SPINR(D),P_SPINR(E)
- Threat
- DUALS(5)
- Vars
- B(e);CHECK,OGATE,XR(E)::P(C),XB(e)
- S(h);XS(H)::R1(D)
- Refutation
- Q(f);N_PINR(E),P_PINR(D),XS(H)
- Try
- Actual
- S(H);
- Threat
- QAR1(I),XP(c)
- Vars
- Q(f);CHECK,OGATE,P_PINR(E),XR(D)::P(A),XQ(f)
- B(e);CHECK,OGATE,XR(E)::P(C),XB(e)
- B(e);N_SPINR(d),OGATE,XB(J)::R1(E)
- Q(f);N_PINR(D),P_PINR(E)::R1(D)
- R(j);N_GUARD::S(H)
- S(h);N_PINR(D),P_PINR(E)::R1(D)
- S(h);S_CUTR(j)::S(H)
- S(i);OGATE::R1(E)
- S(i);S_CUTR(j)::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).