MESON Chess Problem Database
Problem Display
PID: 183408 (4r3/2N3R1/3B1bn1/r3p2p/2N2k1p/3np2B/4P1QK/qbR5 w - - 0 1)
Santiago, Joao Baptista
British Chess Magazine, 1941
#2
9 + 12
| 56 | The Problemist | 1943 |
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.Sd5#
- 1...Ra3
- 2.Sd5#
- 1...Ra4
- 2.Sd5#
- 1...Rd5
- 2.Sxd5#
- 1...Ra6
- 2.Sd5#
- 1...Ra7
- 2.Sd5#
- 1...Raa8
- 2.Sd5#
- 1...Re6
- 2.Sxe6#
- 1...Rea8
- 2.Se6#
- 1...Rb8
- 2.Se6#
- 1...Rc8
- 2.Se6#
- 1...Rd8
- 2.Se6#
- 1...Rf8
- 2.Se6#
- 1...Rg8
- 2.Se6#
- 1...Rh8
- 2.Se6#
- 1...Bg5
- 2.Qf3#
- 1...Be7
- 2.Se6#
- 1...Sb2
- 2.Rf1#
- 1...Sb4
- 2.Rf1#
- 1...Sc5
- 2.Sd5#
- 2.Rf1#
- 1...Se7
- 2.Se6#
- 2.Qf3#
- 1...Sf8
- 2.Qf3#
- 1...Sh8
- 2.Qf3#
- 1...Ra2
- Tries
- 1.Be7?
- threat
- 2.Se6#
- 1...Ra6
- 2.Sd5#
- 1...Sc5
- 2.Sd5#
- 2.Rf1#
- 1...Sf8
- 2.Qf3#
- 1...Rxe7!
- threat
- 1.Rxg6?
- threat
- 2.Rxf6#
- 2.Qf3#
- 1...Sxc1
- 2.Qf3#
- 1...Re6
- 2.Sxe6#
- 2.Qf3#
- 1...Rf8
- 2.Se6#
- 2.Qf3#
- 1...Bg5
- 2.Qf3#
- 1...Be7
- 2.Se6#
- 2.Qf3#
- 1...Bg7
- 2.Qf3#
- 1...Bd8
- 2.Qf3#
- 1...Bh8
- 2.Qf3#
- 1...Sb2
- 2.Rf1#
- 2.Qf3#
- 1...Sf2
- 2.Qf3#
- 1...Sb4
- 2.Rf1#
- 2.Qf3#
- 1...Sc5
- 2.Sd5#
- 2.Rf1#
- 2.Qf3#
- 1...Se1!
- threat
- 1.Qe4+?
- 1...Kg5
- 2.Rxg6#
- 1...Kxe4!
- 1...Kg5
- 1.Qg3+?
- 1...Ke4
- 2.Qxe3#
- 1...hxg3+!
- 1...Ke4
- 1.Be7?
- Keys
- 1.Sxe5!
- threat
- 2.Sxd3#
- 2.Sxg6#
- 1...Qxe5
- 2.Rc4#
- 1...Raxe5
- 2.Sd5#
- 1...Rexe5
- 2.Se6#
- 1...Bxe5
- 2.Rf7#
- 1...Sxc1
- 2.Sd3#
- 2.Sxg6#
- 1...Sdxe5
- 2.Rf1#
- 1...Sgxe5
- 2.Qf3#
- 1...Se1
- 2.Sd3#
- 2.Sxg6#
- 1...Sb2
- 2.Sd3#
- 2.Sxg6#
- 2.Rf1#
- 1...Sf2
- 2.Sd3#
- 2.Sxg6#
- 1...Sb4
- 2.Sd3#
- 2.Sxg6#
- 2.Rf1#
- 1...Sc5
- 2.Sd3#
- 2.Sxg6#
- 2.Sd5#
- 2.Rf1#
- 1...Se7
- 2.Sxd3#
- 2.Sg6#
- 2.Se6#
- 2.Qf3#
- 1...Sf8
- 2.Sxd3#
- 2.Sg6#
- 2.Qf3#
- 1...Sh8
- 2.Sxd3#
- 2.Sg6#
- 2.Qf3#
- threat
- 1.Sxe5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 21
- Sets
- R(g);N_GUARD::S(H)
- R(g);N_GUARD::S(H),XR(g)
- R(l);N_GUARD::S(H),XR(l)
- R(l);N_GUARD::S(H)
- B(j);SBLOCK::QAR1(C)
- B(j);S_CUTR(l)::S(H)
- S(c);N_GUARD::R(A)
- S(k);::QAR1(C)
- Tries
- Try
- B(G);N_PINP(h)
- Threat
- S(H)
- Vars
- R(g);N_GUARD::S(H)
- S(k);::QAR1(C)
- Refutation
- R(l);XB(G)
- Try
- R(I);XS(k)
- Threat
- DUALS(2)
- Vars
- S(c);XR(A)::QAR1(C)
- B(j);::QAR1(C)
- S(c);::QAR1(C)
- Refutation
- S(c);
- Try
- Q(C);CHECK
- Vars
- K(e);N_SPINP(h),P_SPINS(k),S_FLIGHT::R1(I),XS(k)
- Refutation
- K(e);N_SPINP(h),P-FLIGHT,XQ(C)
- Try
- Q(C);CHECK
- Vars
- K(e);N_SPINP(h),P-FLIGHT::QAR1(C),XP(d)
- Refutation
- P(f);CHECK,XQ(C)
- Try
- Actual
- S(F);XP(h)
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD,P_SPINQ(a),XS(F)::R(A)
- R(g);N_GUARD,P_SPINR(g),XS(F)::S(H)
- R(l);N_GUARD,P_SPINR(l),XS(F)::S(H)
- B(j);OGATEB,P_SPINB(j),XS(F)::R(I)
- S(c);N_GUARD,P_SPINS(c),XS(F)::R(A)
- S(k);P_SPINS(k),XS(F)::QAR1(C)
Developed and maintained by Brian Stephenson.
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