MESON Chess Problem Database
Problem Display
PID: 74085 (7b/3r3Q/1N6/R7/3knB2/K4R2/8/1Nn5 w - - 0 1)
Draiska, Imants
3rd Prize, Riga Central CC, 1954
#2
7 + 5
| 3310 | 2345 Chess Problems | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Rd5
- 2.Rxd5#
- 1...Rb7
- 2.Rd5#
- 1...Rc7
- 2.Rd5#
- 1...Re7
- 2.Rd5#
- 1...Rf7
- 2.Rd5#
- 1...Rg7
- 2.Be5#
- 2.Rd5#
- 1...Rxh7
- 2.Rd5#
- 1...Be5
- 2.Bxe5#
- 1...Sd3
- 2.Be3#
- 1...Sd2
- 2.Be3#
- 1...Sf2
- 2.Be3#
- 1...Sc3
- 2.Be3#
- 1...Sg3
- 2.Be3#
- 1...Sg5
- 2.Be3#
- 1...Sd6
- 2.Be3#
- 2.Rd5#
- 1...Sf6
- 2.Be3#
- 2.Be5#
- 1...Rd5
- Tries
- 1.Rc3?
- threat
- 2.Be3#
- 2.Ra4#
- 1...Rd5
- 2.Ra4#
- 2.Rxd5#
- 1...Ra7
- 2.Be3#
- 1...Rc7
- 2.Be3#
- 2.Rd5#
- 1...Sa2
- 2.Be3#
- 1...Sd3
- 2.Rc4#
- 1...Sd2
- 2.Be3#
- 1...Sc5
- 2.Rc4#
- 1...Sd6
- 2.Be3#
- 2.Rd5#
- 1...Sxc3!
- threat
- 1.Qf5?
- threat
- 2.Ra4#
- 1...Rd5
- 2.Rxd5#
- 2.Qxd5#
- 1...Ra7
- 2.Qd5#
- 1...Rc7
- 2.Rd5#
- 2.Qd5#
- 1...Be5
- 2.Bxe5#
- 2.Qxe5#
- 1...Sd3
- 2.Be3#
- 1...Sd2
- 2.Be3#
- 1...Sc3
- 2.Be3#
- 1...Sc5
- 2.Be3#
- 1...Sd6
- 2.Be3#
- 2.Rd5#
- 2.Qd5#
- 1...Sa2!
- threat
- 1.Qg8?
- threat
- 2.Qc4#
- 1...Sd6
- 2.Qd5#
- 1...Rd5
- 2.Rxd5#
- 2.Qxd5#
- 1...Rc7
- 2.Rd5#
- 2.Qd5#
- 1...Rf7
- 2.Rd5#
- 1...Sd2!
- threat
- 1.Qf7?
- threat
- 2.Qc4#
- 1...Rxf7
- 2.Rd5#
- 1...Sd6
- 2.Qd5#
- 1...Rd5
- 2.Rxd5#
- 2.Qxd5#
- 1...Rc7
- 2.Rd5#
- 2.Qd5#
- 1...Sd2!
- threat
- 1.Qxh8+?
- 1...Rg7
- 2.Be5#
- 2.Rd5#
- 1...Sf6!
- 1...Rg7
- 1.Rc3?
- Keys
- 1.Sc3!
- threat
- 2.Qxe4#
- 1...Rxh7
- 2.Rd5#
- 1...Sxc3
- 2.Be3#
- 1...Sd3
- 2.Se2#
- 1...Re7
- 2.Rd5#
- 1...Sd2
- 2.Qxd7#
- 1...Sf2
- 2.Qxd7#
- 1...Sg3
- 2.Qxd7#
- 1...Sc5
- 2.Sb5#
- 1...Sg5
- 2.Qxd7#
- 1...Sd6
- 2.Rd5#
- 1...Sf6
- 2.Be5#
- threat
- 1.Sc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 5
- ADDED MATES = 3
- REMOVED MATES = 5
- Sets
- R(d);N_GUARD::R1(E),XR(d)
- R(d);N_GUARD::R1(E)
- R(d);N_GUARD,XQ(G)::R1(E)
- B(e);N_GUARD::B(D),XB(e)
- S(a);SBLOCK::B(D)
- S(c);::B(D)
- Tries
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- R(d);P_PINR(E)::B(D)
- S(a);::B(D)
- S(a);SBLOCK::R1(C)
- S(c);::B(D)
- S(c);::R1(C)
- Refutation
- S(c);XR(C)
- Try
- Q(G);
- Threat
- R(E)
- Vars
- R(d);N_GUARD,P_PINR(E)::QAR1(G)
- S(a);SBLOCK::B(D)
- S(c);::B(D)
- Refutation
- S(a);
- Try
- Q(G);
- Threat
- QAR1(G)
- Vars
- S(c);S_CUTR(d)::QAR1(G)
- R(d);N_GUARD::R1(E)
- Refutation
- S(c);
- Try
- Q(G);
- Threat
- QAR1(G)
- Vars
- R(d);N_GUARD,XQ(G)::R1(E)
- S(c);S_CUTR(d)::QAR1(G)
- Refutation
- S(c);
- Try
- Q(G);CHECK,XB(e)
- Refutation
- S(c);P_SPINS(c)
- Try
- Actual
- S(A);
- Threat
- QAR1(G),XS(c)
- Vars
- R(d);N_GUARD,XQ(G)::R1(E)
- S(c);SBLOCK,XS(A)::B(D)
- S(a);N_GUARD::S(A)
- R(d);N_GUARD::R1(E)
- S(c);N_GUARD::QAR(G),XR(d)
- S(c);SBLOCK::S(A)
- S(c);S_CUTR(d)::R1(E)
- S(c);S_CUTB(e)::B(D)
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