MESON Chess Problem Database
Problem Display
PID: 54926 (8/3KRPr1/p1Qn1N1B/3P2nB/6N1/2Pk3r/1Pb3Rp/8 w - - 0 1)
Monteiro da Silveira, ?
2nd Prize, Chess, 1949
#2
12 + 8
| 81 | Chess | 1950 |
| 3105 | FIDE Album (1945-1955) | 1964 |
SOLUTION
- SOUND
- Sets
- 1...Re3
- 2.Rxe3#
- 1...Rh4
- 2.Re3#
- 1...Rxh5
- 2.Re3#
- 1...Sf3
- 2.Sf2#
- 2.Re3#
- 1...Sge4
- 2.Se5#
- 1...Se6
- 2.Sf2#
- 2.Se5#
- 2.Rd2#
- 1...Sgxf7
- 2.Sf2#
- 2.Rd2#
- 1...Sh7
- 2.Sf2#
- 2.Se5#
- 2.Rd2#
- 1...Sde4
- 2.Qxa6#
- 1...Sf5
- 2.Qxa6#
- 1...Sb7
- 2.Qxa6#
- 1...Sdxf7
- 2.Qxa6#
- 1...Sc8
- 2.Qxa6#
- 1...Se8
- 2.Qxa6#
- 1...Re3
- Tries
- 1.Bg6+?
- 1...Sge4
- 2.Se5#
- 2.Rd2#
- 1...Sde4
- 2.Qxa6#
- 1...Sf5
- 2.Qxa6#
- 1...Rxg6!
- 1...Sge4
- 1.Bxg5?
- threat
- 2.Sf2#
- 2.Se5#
- 2.Rd2#
- 1...Sxf7
- 2.Sf2#
- 2.Rd2#
- 2.Qxa6#
- 1...h1S
- 2.Se5#
- 2.Rd2#
- 1...Re3
- 2.Rxe3#
- 1...Rf3
- 2.Se5#
- 2.Rd2#
- 1...Bb1
- 2.Se5#
- 2.Rd2#
- 1...Bd1
- 2.Se5#
- 2.Rd2#
- 1...Bb3
- 2.Se5#
- 2.Rd2#
- 1...Ba4
- 2.Se5#
- 2.Rd2#
- 1...Sc4
- 2.Sf2#
- 1...Se4
- 2.Se5#
- 2.Qxa6#
- 1...Rxg5!
- threat
- 1.Rge2?
- threat
- 2.Sf2#
- 2.Se5#
- 1...Rxh5
- 2.Sf2#
- 2.R7e3#
- 1...Sgxf7
- 2.Sf2#
- 2.Rd2#
- 1...Sdxf7
- 2.Sf2#
- 2.Qxa6#
- 1...Re3
- 2.Sf2#
- 2.R7xe3#
- 1...Sge4
- 2.Se5#
- 1...Sde4
- 2.Se5#
- 2.Qxa6#
- 1...h1S
- 2.Se5#
- 1...Sf3
- 2.Sf2#
- 2.R7e3#
- 1...Sc4
- 2.Sf2#
- 1...Rf3!
- threat
- 1.Ree2?
- threat
- 2.Sf2#
- 2.Se5#
- 2.Rd2#
- 1...Rxh5
- 2.Se5#
- 2.Rd2#
- 2.Re3#
- 1...Sgxf7
- 2.Sf2#
- 2.Rd2#
- 1...Sdxf7
- 2.Sf2#
- 2.Rd2#
- 2.Qxa6#
- 1...h1S
- 2.Se5#
- 2.Rd2#
- 1...Re3
- 2.Sf2#
- 2.Rd2#
- 2.Rxe3#
- 1...Rf3
- 2.Se5#
- 2.Rd2#
- 1...Sf3
- 2.Re3#
- 1...Sge4
- 2.Se5#
- 1...Sc4
- 2.Sf2#
- 1...Sde4
- 2.Se5#
- 2.Qxa6#
- 1...Rxf7+!
- threat
- 1.Re4?
- threat
- 2.Se5#
- 2.Rd4#
- 1...Sgxe4
- 2.Se5#
- 1...Sgxf7
- 2.Sf2#
- 2.Rd2#
- 2.Rd4#
- 1...Sdxe4
- 2.Qxa6#
- 1...Sdxf7
- 2.Rd4#
- 2.Qc4#
- 2.Qxa6#
- 1...Sf3
- 2.Sf2#
- 2.Re3#
- 1...Se6
- 2.Sf2#
- 2.Se5#
- 2.Rd2#
- 1...Sc4
- 2.Rd4#
- 2.Qxc4#
- 1...Sb5
- 2.Se5#
- 2.Qc4#
- 1...Sf5
- 2.Se5#
- 2.Qc4#
- 2.Qxa6#
- 1...Rxf7+!
- threat
- 1.Qc5?
- threat
- 2.Se5#
- 2.Qd4#
- 1...Sgxf7
- 2.Sf2#
- 2.Rd2#
- 2.Qd4#
- 1...Sdxf7
- 2.Qd4#
- 1...Re3
- 2.Rxe3#
- 2.Qd4#
- 1...Sf3
- 2.Sf2#
- 2.Re3#
- 1...Se6
- 2.Sf2#
- 2.Se5#
- 2.Rd2#
- 1...Sc4
- 2.Qd4#
- 1...Sb5
- 2.Se5#
- 1...Sf5
- 2.Se5#
- 1...Ba4+!
- threat
- 1.Qxa6+?
- 1...Sb5
- 2.Qxb5#
- 1...Sc4!
- 1...Sb5
- 1.Bg6+?
- Keys
- 1.Se4!
- threat
- 2.Rd2#
- 1...Sgxe4
- 2.Se5#
- 1...Sdxe4
- 2.Qxa6#
- 1...Se6
- 2.Sgf2#
- 1...Sf3
- 2.Sef2#
- 1...Sc4
- 2.Sc5#
- threat
- 1.Se4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 8
- Sets
- R(d);N_GUARD::R1(K),XR(d)
- R(d);N_GUARD::R1(K)
- R(d);N_GUARD,XB(F)::R1(K)
- S(e);::S(D)
- S(g);N_GUARD::QAB(G),XP(f)
- S(g);N_GUARD,XP(L)::QAB(G),XP(f)
- Tries
- Try
- B(F);CHECK
- Vars
- S(g);P_SPINS(g)::QAB(G),XP(f)
- Refutation
- R(h);XB(F)
- Try
- B(I);XS(e)
- Threat
- DUALS(3)
- Vars
- R(d);N_GUARD::R1(K),XR(d)
- S(g);::S(D)
- Refutation
- R(h);XB(I)
- Try
- R(B);
- Threat
- DUALS(2)
- Vars
- S(e);::S(D)
- P(b);::S(D)
- S(g);::S(D)
- Refutation
- R(d);
- Try
- R(K);P_SPINP(L)
- Threat
- DUALS(3)
- Vars
- S(e);S_CUTR(d)::R1(K)
- S(e);::S(D)
- S(g);::S(D)
- Refutation
- R(h);CHECK,XP(L)
- Try
- R(K);P_SPINP(L)
- Threat
- DUALS(2)
- Vars
- S(e);XR(K)::S(D)
- S(g);N_GUARD,XR(K)::QAB(G),XP(f)
- Refutation
- R(h);CHECK,XP(L)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- S(g);XP(L)::QAR1(G)
- S(g);::QAR1(G)
- S(g);::S(D)
- Refutation
- B(a);CHECK
- Try
- Q(G);CHECK,XP(f)
- Vars
- S(g);N_GUARD,P_SPINS(g)::QAB(G),XS(g)
- Refutation
- S(g);P_SPINS(g)
- Try
- Actual
- S(H);
- Threat
- R1(B)
- Vars
- S(e);SBLOCK,XS(H)::S(D)
- S(g);N_GUARD,XS(H)::QAB(G),XP(f)
- S(e);::S(D)
- S(e);::S(H)
- S(g);SBLOCK::S(H)
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