MESON Chess Problem Database
Problem Display
PID: 157953 (3r4/p4B2/k2NR2p/N5pq/PP3p1r/8/4RB2/3K1Q2 w - - 0 1)
Apro, Laszlo
Swiat Szachowy, 1931
#2
10 + 8
| 15148 | Sadier Collection | 2016 |
| 3713 | Snap | 2024 |
SOLUTION
- SOUND
- Sets
- 1...Qxe2+
- 2.Qxe2#
- 1...Qg6
- 2.R2e4#
- 1...Qxf7
- 2.Re1#
- 2.Ra2#
- 2.Rb2#
- 2.Rc2#
- 2.Rd2#
- 2.R2e4#
- 2.R2e5#
- 1...Rg4
- 2.Re1#
- 2.Ra2#
- 2.Rb2#
- 2.Rc2#
- 2.Rd2#
- 2.R2e4#
- 2.R2e5#
- 1...Rxd6+
- 2.Rxd6#
- 1...Ra8
- 2.Sdc4#
- 2.Se4#
- 2.Sb5#
- 2.Sf5#
- 2.Sdb7#
- 2.Sc8#
- 2.Se8#
- 1...Rb8
- 2.Sdb7#
- 1...Rc8
- 2.Sxc8#
- 1...Re8
- 2.Sxe8#
- 1...Rf8
- 2.Sdc4#
- 2.Se4#
- 2.Sb5#
- 2.Sf5#
- 2.Sdb7#
- 2.Sc8#
- 2.Se8#
- 1...Rg8
- 2.Sdc4#
- 2.Se4#
- 2.Sb5#
- 2.Sf5#
- 2.Sdb7#
- 2.Sc8#
- 2.Se8#
- 1...Rh8
- 2.Sdc4#
- 2.Se4#
- 2.Sb5#
- 2.Sf5#
- 2.Sdb7#
- 2.Sc8#
- 2.Se8#
- 1...f3
- 2.R2e4#
- 1...g4
- 2.R2e5#
- 1...Qxe2+
- Tries
- 1.Sc6?
- threat
- 2.b5#
- 1...Qxe2+
- 2.Qxe2#
- 1...Rb8
- 2.Sxb8#
- 1...g4
- 2.R2e5#
- 1...Rxd6+!
- threat
- 1.Sb7?
- threat
- 2.b5#
- 1...Qxe2+
- 2.Qxe2#
- 1...g4
- 2.R2e5#
- 1...Rxd6+!
- threat
- 1.Re7?
- threat
- 2.Bc4#
- 2.Rxa7#
- 1...Qxe2+
- 2.Qxe2#
- 1...Qxf7
- 2.R2e6#
- 1...Rd7
- 2.Bc4#
- 1...Ra8
- 2.Bc4#
- 1...Rb8
- 2.Rxa7#
- 1...Rc8
- 2.Rxa7#
- 1...f3
- 2.R2e4#
- 2.Rxa7#
- 1...g4
- 2.R2e5#
- 2.Rxa7#
- 1...Rxd6+!
- threat
- 1.Qe1?
- threat
- 2.b5#
- 1...Qxe2+
- 2.Qxe2#
- 1...Rxd6+
- 2.Rxd6#
- 1...Rb8
- 2.Sdb7#
- 1...g4!
- threat
- 1.Sc6?
- Keys
- 1.Rf6!
- threat
- 2.Bc4#
- 1...Qxe2+
- 2.Qxe2#
- 1...Rxd6+
- 2.Rxd6#
- 1...Qxf7
- 2.Ree6#
- 1...Rb8
- 2.Sdb7#
- 1...Rc8
- 2.Sxc8#
- 1...f3
- 2.Re4#
- 1...g4
- 2.Re5#
- threat
- 1.Rf6!
This anticipates 274745(1933)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- Q(d);CHECK,OGATE,P_SPINQ(d),XR(C)::QAB(B),XQ(d)
- Q(d);N_PINR(C)::QAB(B)+R(C)
- R(h);CHECK,OGATE,P_SPINR(h),XS(H)::R(I),XR(h)
- R(h);N_PINS(H)::R(I)+S(H)
- R(h);N_PINS(H)::R(I)+S(H),XR(h)
- P(a);N_PINR(C)::QAB(B)+R(C)
- P(c);N_PINR(C)::QAB(B)+R(C)
- Tries
- Try
- S(G);
- Threat
- P(F)
- Vars
- Q(d);CHECK,OGATE,P_SPINQ(d),XR(C)::QAB(B),XQ(d)
- R(h);N_GUARD,N_PINS(H)::S(G),XR(h)
- P(c);N_PINR(C)::QAB(B)+R(C)
- Refutation
- R(h);CHECK,XS(H)
- Try
- S(G);
- Threat
- P(F)
- Vars
- Q(d);CHECK,OGATE,P_SPINQ(d),XR(C)::QAB(B),XQ(d)
- P(c);N_PINR(C)::QAB(B)+R(C)
- Refutation
- R(h);CHECK,P_SPINR(h),XS(H)
- Try
- R(I);
- Threat
- DUALS(2)
- Vars
- Q(d);CHECK,OGATE,P_SPINQ(d),XR(C)::QAB(B),XQ(d)
- Q(d);N_PINR(C),XB(J)::QAB(B)+R(C)
- R(h);::B(J)
- R(h);N_PINS(H)::B(J)
- R(h);N_PINS(H)::R1(I),XP(g)
- Refutation
- R(h);CHECK,XS(H)
- Try
- Q(B);
- Threat
- P(F)
- Vars
- Q(d);CHECK,OGATE,XR(C)::QAB(B),XQ(d)
- R(h);CHECK,OGATE,P_SPINR(h),XS(H)::R(I),XR(h)
- R(h);N_PINS(H)::R(I)+S(H)
- Refutation
- P(c);N_PINR(C)
- Try
- Actual
- R(I);
- Threat
- B(J)
- Vars
- Q(d);CHECK,OGATE,P_SPINQ(d),XR(C)::QAB(B),XQ(d)
- R(h);CHECK,OGATE,P_SPINR(h),XS(H)::R(I),XR(h)
- Q(d);N_PINR(C),XB(J)::QAB(B)+R(C)
- R(h);N_PINS(H)::R(I)+S(H)
- R(h);N_PINS(H)::R(I)+S(H),XR(h)
- P(a);N_PINR(C)::QAB(B)+R(C)
- P(c);N_PINR(C)::QAB(B)+R(C)
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).