MESON Chess Problem Database
Problem Display
PID: 242346 (nb1r1R1B/8/4B1N1/2Nppp2/p2k2b1/K1R1p2r/1P3P1p/7Q w - - 0 1)
Morra, Juan Carlos
Problemas, 1958
#2
10 + 12
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rf3
- 2.Qd1#
- 1...Rh4
- 2.fxe3#
- 1...Rh5
- 2.fxe3#
- 1...Rh6
- 2.fxe3#
- 1...Rh7
- 2.fxe3#
- 1...Rxh8
- 2.fxe3#
- 1...Rd6
- 2.Bxe5#
- 1...Rc8
- 2.Qxd5#
- 1...Re8
- 2.Qxd5#
- 1...Rxf8
- 2.Qxd5#
- 1...Bd1
- 2.Qxd1#
- 1...Bf3
- 2.fxe3#
- 1...Bd6
- 2.Qxd5#
- 1...Ba7
- 2.Bxe5#
- 1...Sc7
- 2.Bxe5#
- 1...f4
- 2.Rxf4#
- 1...Rf3
- Tries
- 1.Kxa4?
- threat
- 2.Sb3#
- 1...Bd1+
- 2.Qxd1#
- 1...Rf3
- 2.Qd1#
- 1...Bf3
- 2.fxe3#
- 1...Sb6+!
- threat
- 1.Sxe5?
- threat
- 2.Sf3#
- 2.Sc6#
- 1...Rxh8
- 2.Sc6#
- 1...Rf3
- 2.Sxf3#
- 2.Sc6#
- 2.Qd1#
- 1...Bf3
- 2.Sxf3#
- 2.Sc6#
- 2.fxe3#
- 1...Bxe5!
- threat
- 1.Se7?
- threat
- 2.Sc6#
- 1...Rc8
- 2.Qxd5#
- 1...Rd6!
- threat
- 1.Bxd5?
- threat
- 2.Se6#
- 2.Rc4#
- 1...Rxd5
- 2.Se6#
- 1...exf2
- 2.Se6#
- 1...Rf3
- 2.Qd1#
- 1...Rd6
- 2.Bxe5#
- 2.Rc4#
- 1...Re8
- 2.Rc4#
- 1...Be2
- 2.Se6#
- 1...Bd6
- 2.Rc4#
- 1...Sb6
- 2.Se6#
- 1...Sc7
- 2.Bxe5#
- 2.Rc4#
- 1...e2
- 2.Se6#
- 1...f4
- 2.Rc4#
- 2.Rxf4#
- 2.Qe4#
- 1...Bf3!
- threat
- 1.Bf7?
- threat
- 2.Se6#
- 1...Rf3
- 2.Qd1#
- 1...Rd6
- 2.Bxe5#
- 1...Re8
- 2.Qxd5#
- 1...Bf3
- 2.fxe3#
- 1...Bd6
- 2.Qxd5#
- 1...Sc7
- 2.Bxe5#
- 1...f4!
- threat
- 1.Rxf5?
- threat
- 2.Rf4#
- 1...Rhxh8
- 2.fxe3#
- 1...Rdxh8
- 2.Qxd5#
- 1...Rf3
- 2.Qd1#
- 1...Rf8
- 2.Qxd5#
- 1...Bf3
- 2.fxe3#
- 1...Bxf5!
- threat
- 1.Rxd8?
- threat
- 2.Rxd5#
- 2.Qxd5#
- 1...Rf3
- 2.Rxd5#
- 2.Qd1#
- 1...Bf3
- 2.fxe3#
- 1...Bd6
- 2.Qxd5#
- 1...Sc7
- 2.Bxe5#
- 1...Sb6!
- threat
- 1.Qf3?
- threat
- 2.Qf4#
- 2.fxe3#
- 1...Rxh8
- 2.Qxe3#
- 2.fxe3#
- 1...Bxf3
- 2.fxe3#
- 1...exf2
- 2.Qf4#
- 1...h1Q
- 2.fxe3#
- 1...h1B
- 2.fxe3#
- 1...e2
- 2.Qf4#
- 1...f4
- 2.Rxf4#
- 2.Qxf4#
- 1...Rxf3!
- threat
- 1.Qe4+?
- 1...dxe4
- 2.Rc4#
- 1...fxe4!
- 1...dxe4
- 1.Qc1?
- threat
- 2.Rd3#
- 1...exf2
- 2.Qf4#
- 1...e2
- 2.Qf4#
- 1...Be2!
- threat
- 1.Kxa4?
- Keys
- 1.Bg8!
- threat
- 2.Se6#
- 1...Rf3
- 2.Qd1#
- 1...Rd6
- 2.Bxe5#
- 1...Re8
- 2.Qxd5#
- 1...Bf3
- 2.fxe3#
- 1...Bd6
- 2.Qxd5#
- 1...Sc7
- 2.Bxe5#
- 1...f4
- 2.Rxf4#
- threat
- 1.Bg8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 9
- Sets
- R(c);S_CUTB(f)::QAR(A)
- R(c);N_GUARD::P(C),XP(b)
- R(c);N_GUARD,N_SPINP(h),XB(J)::P(C),XP(b)
- R(l);S_CUTB(k)::B(J),XP(h)
- R(l);N_GUARD::QAR1(A),XP(g)
- R(l);N_GUARD,XR(I)::QAR1(A),XP(g)
- B(f);N_GUARD::QAR(A),XB(f)
- B(f);S_CUTR(c)::P(C),XP(b)
- B(k);P_PINS(F),S_CUTR(l)::QAR1(A),XP(g)
- B(k);N_GUARD::B(J),XP(h)
- S(j);S_CUTB(k)::B(J),XP(h)
- P(i);OGATE::R(I),XP(i)
- Tries
- Try
- K(D);P-FLIGHT,XP(d)
- Threat
- S(F)
- Vars
- B(f);CHECK,N_GUARD::QAR(A),XB(f)
- R(c);S_CUTB(f)::QAR(A)
- B(f);S_CUTR(c)::P(C),XP(b)
- Refutation
- S(j);CHECK
- Try
- S(H);XP(h)
- Threat
- DUALS(2)
- Vars
- R(c);XB(J)::S(H)
- Refutation
- B(k);P_SPINB(k),XS(H)
- Try
- S(H);
- Threat
- S(H)
- Vars
- R(l);N_GUARD::QAR1(A),XP(g)
- Refutation
- R(l);
- Try
- B(G);XP(g)
- Threat
- DUALS(2)
- Vars
- R(l);XB(G)::S(F)
- P(b);P_PINR(E),XP(C)::S(F)
- R(c);S_CUTB(f)::QAR(A)
- R(l);::R1(E)
- B(f);::S(F)
- B(k);P_PINS(F)::R1(E)
- S(j);::S(F)
- P(b);P_PINR(E)::S(F)
- Refutation
- B(f);
- Try
- B(G);
- Threat
- S(F)
- Vars
- R(c);S_CUTB(f)::QAR(A)
- R(l);S_CUTB(k)::B(J),XP(h)
- R(l);N_GUARD::QAR1(A),XP(g)
- B(f);S_CUTR(c)::P(C),XP(b)
- B(k);P_PINS(F),S_CUTR(l)::QAR1(A),XP(g)
- S(j);S_CUTB(k)::B(J),XP(h)
- Refutation
- P(i);
- Try
- R(I);XP(i)
- Threat
- R(I)
- Vars
- R(c);N_GUARD,N_SPINP(h),XB(J)::P(C),XP(b)
- R(l);N_GUARD,N_SPINP(h),XB(J)::QAR1(A),XP(g)
- R(c);S_CUTB(f)::QAR(A)
- R(l);N_GUARD::QAR1(A),XP(g)
- B(f);S_CUTR(c)::P(C),XP(b)
- Refutation
- B(f);XR(I)
- Try
- R(I);N_PINP(h),P_PINP(g),XR(l)
- Threat
- DUALS(2)
- Vars
- B(f);S_CUTR(c)::P(C),XP(b)
- B(k);N_SPINP(g),P_PINS(F),P_SPINP(h)::QAR1(A),XP(g)
- S(j);S_CUTB(k)::B(J),XP(h)
- Refutation
- S(j);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(f);XQ(A)::P(C),XP(b)
- P(b);XP(C)::QAR2(A)
- P(a);::P(C),XP(b)
- P(b);::QAR2(A)
- Refutation
- R(c);XQ(A)
- Try
- Q(A);CHECK
- Vars
- P(g);XQ(A)::R1(E)
- Refutation
- P(i);XQ(A)
- Try
- Q(A);
- Threat
- R1(E)
- Vars
- P(b);OGATE,P_PINR(E),XP(C)::QAR2(A)
- P(b);OGATE,P_PINR(E)::QAR2(A)
- Refutation
- B(f);
- Try
- Actual
- B(G);
- Threat
- S(F)
- Vars
- R(c);S_CUTB(f)::QAR(A)
- R(l);S_CUTB(k)::B(J),XP(h)
- R(l);N_GUARD::QAR1(A),XP(g)
- B(f);S_CUTR(c)::P(C),XP(b)
- B(k);P_PINS(F),S_CUTR(l)::QAR1(A),XP(g)
- S(j);S_CUTB(k)::B(J),XP(h)
- P(i);OGATE::R(I),XP(i)
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).