MESON Chess Problem Database
Problem Display
PID: 250196 (b4Q2/2K5/1p4p1/pP1pR1P1/3kq1R1/P1N1N3/r1rPB3/B7 w - - 0 1)
Gross, Izidor
Shakhmaty, 1927
#2
12 + 9
| 6490 | yacpdb | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Kxe5
- 2.Qf6#
- 1...Rxc3+
- 2.Bxc3#
- 1...Kxe5
- Tries
- 1.Sxc2+?
- 1...Kxe5
- 2.Qf6#
- 1...Rxc2!
- 1...Kxe5
- 1.Sc4?
- threat
- 2.Qf2#
- 1...Qf4
- 2.Rxf4#
- 1...dxc4!
- threat
- 1.Sf5+?
- 1...Kxe5
- 2.Qf6#
- 1...gxf5!
- 1...Kxe5
- 1.Qc5+?
- 1...Kxc5
- 2.Sxe4#
- 1...Kxe5
- 2.Rxe4#
- 1...bxc5!
- 1...Kxc5
- 1.Qd6?
- threat
- 2.Rgxe4#
- 2.Rexe4#
- 1...Rxc3+
- 2.Bxc3#
- 1...Qf4
- 2.Rxf4#
- 1...Qxg4!
- threat
- 1.Sxc2+?
- Keys
- 1.Qf2!
- threat
- 2.Sc4#
- 1...Kc5
- 2.Sxe4#
- 1...Kxe5
- 2.Qf6#
- threat
- 1.Qf2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- K(c);N_SPINQ(d),OGATEB,S_FLIGHT,XR(I)::QAB1(L)
- R(b);CHECK,OGATE,P_SPINR(b),XS(E)::B(A),XR(b)
- Tries
- Try
- S(F);CHECK,N_SPINS(E),XR(b)
- Vars
- K(c);N_GUARD,N_SPINQ(d),S_CUTR(a),S_FLIGHT,XR(I)::QAB1(L)
- Refutation
- R(a);P_PINS(E),XS(F)
- Try
- S(F);N_SPINS(E)
- Threat
- QAB(L)
- Vars
- Q(d);OGATEB,P_PINR(I)::R(G),XQ(d)
- Refutation
- P(f);XS(F)
- Try
- S(F);CHECK
- Vars
- K(c);N_GUARD,N_SPINQ(d),S_CUTP(h),S_FLIGHT,XR(I)::QAB1(L)
- Refutation
- P(h);XS(F)
- Try
- Q(L);CHECK,N_SPINS(E)
- Vars
- K(c);N_SPINQ(d),P_SPINP(f),S_FLIGHT,XQ(L)::S(E),XQ(d)
- K(c);N_GUARD,N_SPINQ(d),P_SPINP(f),S_FLIGHT,XR(I)::R1(G),XQ(d)
- Refutation
- P(g);XQ(L)
- Try
- Q(L);P_PINP(f)
- Threat
- DUALS(2)
- Vars
- R(b);CHECK,OGATE,P_SPINR(b),XS(E)::B(A),XR(b)
- Q(d);OGATEB::R(G),XQ(d)
- Refutation
- Q(d);N_SPINQ(d),XR(G)
- Try
- Actual
- Q(L);
- Threat
- QAB(L)+S(F)
- Vars
- K(c);N_PINS(E),N_SPINQ(d),P_SPINP(f),S_FLIGHT::S(E),XQ(d)
- K(c);N_SPINQ(d),OGATEB,S_FLIGHT,XR(I)::QAB1(L)
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).