MESON Chess Problem Database
Problem Display
PID: 173582 (8/2p4b/1p1P1P1r/pR1NpB2/P1k2bR1/K2N3r/1B2Ppq1/6nQ w - - 0 1)
Dragoescu, Radu
Boletim da UBP, 1984
#2
12 + 12
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Qe4#
- 1...Qe4
- 2.Qxe4#
- 1...Qxd5
- 2.Qxd5#
- 1...Qh2
- 2.Qe4#
- 1...Qg3
- 2.Qe4#
- 1...Qxg4
- 2.Qe4#
- 1...Rxh1
- 2.Sxe5#
- 2.Se3#
- 1...Rh2
- 2.Sxe5#
- 2.Se3#
- 1...Rxd3+
- 2.exd3#
- 1...Re3
- 2.Sxe3#
- 1...R3h4
- 2.Sxe5#
- 2.Se3#
- 1...R3h5
- 2.Sxe5#
- 2.Se3#
- 1...Sf3
- 2.Se3#
- 2.Qc1#
- 1...cxd6
- 2.Sxb6#
- 1...c5
- 2.Sxb6#
- 1...c6
- 2.Sxb6#
- 1...Qf1
- Tries
- 1.Ka2?
- threat
- 2.Sxe5#
- 1...Qxd5
- 2.Qxd5#
- 1...Qxg4
- 2.Qe4#
- 1...Rxd3
- 2.exd3#
- 1...cxd6
- 2.Sxb6#
- 1...c5
- 2.Sxb6#
- 1...Qe4
- 2.Qxe4#
- 1...Re3
- 2.Sxe3#
- 1...Sf3
- 2.Se3#
- 2.Qc1#
- 1...e4!
- threat
- 1.e3?
- threat
- 2.Sxe5#
- 1...Qxd5
- 2.Qxd5#
- 1...Qxg4
- 2.Qe4#
- 1...Rxe3
- 2.Sxe3#
- 1...cxd6
- 2.Sxb6#
- 1...Qe4
- 2.Qxe4#
- 1...c5
- 2.Sxb6#
- 1...Sf3
- 2.Qc1#
- 1...e4!
- threat
- 1.dxc7?
- threat
- 2.Sxb6#
- 2.c8Q#
- 2.c8R#
- 1...Rxd3+
- 2.exd3#
- 1...Qxh1
- 2.Sxb6#
- 2.c8Q#
- 2.c8R#
- 1...Qxd5
- 2.Qxd5#
- 1...Qxg4
- 2.Sxb6#
- 2.Qe4#
- 2.c8Q#
- 2.c8R#
- 1...Rxh1
- 2.Sxe5#
- 2.Se3#
- 2.Sxb6#
- 2.c8Q#
- 2.c8R#
- 1...Bxf5
- 2.Sxb6#
- 1...Sxe2
- 2.Sxb6#
- 2.c8Q#
- 2.c8R#
- 1...f1Q
- 2.Sxb6#
- 2.c8Q#
- 2.c8R#
- 1...f1S
- 2.Sxb6#
- 2.c8Q#
- 2.c8R#
- 1...f1B
- 2.Sxb6#
- 2.c8Q#
- 2.c8R#
- 1...f1R
- 2.Sxb6#
- 2.c8Q#
- 2.c8R#
- 1...e4
- 2.Sxb6#
- 1...Qf1
- 2.Sxb6#
- 2.Qe4#
- 2.c8Q#
- 2.c8R#
- 1...Qf3
- 2.Sxb6#
- 2.c8Q#
- 2.c8R#
- 1...Qe4
- 2.Sxb6#
- 2.Qxe4#
- 2.c8Q#
- 2.c8R#
- 1...Qh2
- 2.Sxb6#
- 2.Qe4#
- 2.c8Q#
- 2.c8R#
- 1...Qg3
- 2.Sxb6#
- 2.Qe4#
- 2.c8Q#
- 2.c8R#
- 1...Rh2
- 2.Sxe5#
- 2.Se3#
- 2.Sxb6#
- 2.c8Q#
- 2.c8R#
- 1...Re3
- 2.Sxe3#
- 2.Sxb6#
- 2.c8Q#
- 2.c8R#
- 1...Rf3
- 2.Sxb6#
- 2.c8Q#
- 2.c8R#
- 1...Rg3
- 2.Sxb6#
- 2.c8Q#
- 2.c8R#
- 1...R3h4
- 2.Sxe5#
- 2.Se3#
- 2.Sxb6#
- 2.c8Q#
- 2.c8R#
- 1...R3h5
- 2.Sxe5#
- 2.Se3#
- 2.Sxb6#
- 2.c8Q#
- 2.c8R#
- 1...R6h4
- 2.Sxb6#
- 2.c8Q#
- 2.c8R#
- 1...R6h5
- 2.Sxb6#
- 2.c8Q#
- 2.c8R#
- 1...Rg6
- 2.Sxb6#
- 2.c8Q#
- 2.c8R#
- 1...Bg6
- 2.Sxb6#
- 2.c8Q#
- 2.c8R#
- 1...Bg8
- 2.Sxb6#
- 2.c8Q#
- 2.c8R#
- 1...Sf3
- 2.Se3#
- 2.Sxb6#
- 2.Qc1#
- 2.c8Q#
- 2.c8R#
- 1...Rxf6!
- threat
- 1.Ka2?
- Keys
- 1.Rg7!
- threat
- 2.Rxc7#
- 1...Rxd3+
- 2.exd3#
- 1...Qxd5
- 2.Qxd5#
- 1...Qxg7
- 2.Qe4#
- 1...cxd6
- 2.Sxb6#
- 2.Rc7#
- 1...c5
- 2.Sxb6#
- 1...Be3
- 2.Sxe5#
- 1...c6
- 2.Sxb6#
- threat
- 1.Rg7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- Q(c);OGATE::QAR2(A)
- Q(c);N_SPINB(f),OGATE::QAR2(A),XQ(c)
- Q(c);OGATE,XS(I)::QAB1(A),XQ(c)
- Q(c);N_SPINB(f),OGATE,XR(G)::QAR2(A)
- R(d);CHECK,OGATE,XS(E)::P(C),XR(d)
- R(d);N_GUARD::S(I),XR(d)
- P(k);N_GUARD,XP(K)::S(I),XP(i)
- P(k);N_GUARD::S(I),XP(i)
- Tries
- Try
- K(D);N_SPINS(E),P-FLIGHT
- Threat
- S(E),XP(h)
- Vars
- Q(c);OGATE,XS(I)::QAB1(A),XQ(c)
- Q(c);N_SPINB(f),OGATE,XR(G)::QAR2(A)
- R(d);OGATE,XS(E)::P(C),XR(d)
- P(k);N_GUARD,XP(K)::S(I),XP(i)
- P(k);N_GUARD::S(I),XP(i)
- Q(c);N_SPINB(f),OGATE::QAR2(A),XQ(c)
- R(d);N_GUARD::S(I),XR(d)
- Refutation
- P(h);N_SPINB(f)
- Try
- P(C);N_SPINS(E)
- Threat
- S(E),XP(h)
- Vars
- Q(c);OGATE,XS(I)::QAB1(A),XQ(c)
- Q(c);N_SPINB(f),OGATE,XR(G)::QAR2(A)
- R(d);P_PINS(E),XP(C)::S(I),XR(d)
- P(k);N_GUARD,XP(K)::S(I),XP(i)
- Q(c);N_SPINB(f),OGATE::QAR2(A),XQ(c)
- P(k);N_GUARD::S(I),XP(i)
- S(a);OGATE::QAR(A)
- Refutation
- P(h);N_SPINB(f)
- Try
- P(K);XP(k)
- Threat
- DUALS(3)
- Vars
- R(d);CHECK,OGATE,XS(E)::P(C),XR(d)
- Q(c);OGATE,XS(I)::QAB1(A),XQ(c)
- B(l);XB(J)::S(I),XP(i)
- P(h);N_SPINB(f)::S(I),XP(i)
- Refutation
- R(j);XP(L)
- Try
- Actual
- R(G);N_PINB(f)
- Threat
- R(G),XP(k)
- Vars
- R(d);CHECK,OGATE,XS(E)::P(C),XR(d)
- Q(c);OGATE,XS(I)::QAB1(A),XQ(c)
- Q(c);OGATE,XR(G)::QAR2(A)
- P(k);N_GUARD::S(I),XP(i)
- B(f);N_PINS(E)::S(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).