MESON Chess Problem Database
Problem Display
PID: 125369 (Kb6/1B5n/1Q2P2R/4k3/1NR4N/1np2rP1/8/3br3 w - - 0 1)
Draiska, Imants
Source?, 1962
#2
9 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ref1
- 2.Re4#
- 1...Rg1
- 2.Re4#
- 1...Rh1
- 2.Re4#
- 1...Re4
- 2.Rxe4#
- 1...Rff1
- 2.Sd3#
- 1...Rf2
- 2.Sd3#
- 1...Rd3
- 2.Sxd3#
- 1...Rf4
- 2.Sd3#
- 2.gxf4#
- 1...Rf5
- 2.Sd3#
- 1...Rf6
- 2.Sd3#
- 1...Rf7
- 2.Sd3#
- 1...Rf8
- 2.Sd3#
- 1...Be2
- 2.Re4#
- 1...Ba7
- 2.Qc7#
- 1...Bc7
- 2.Qxc7#
- 1...Sa1
- 2.Qd4#
- 2.Qc5#
- 1...Sc1
- 2.Qd4#
- 2.Qc5#
- 1...Sd2
- 2.Qd4#
- 2.Qc5#
- 1...Sd4
- 2.Rc5#
- 2.Qxd4#
- 2.Qc5#
- 1...Sa5
- 2.Qd4#
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Ref1
- Tries
- 1.Sc6+?
- 1...Kd6
- 2.Qd8#
- 1...Kd5!
- 1...Kd6
- 1.Sxf3+?
- 1...Kf5
- 2.g4#
- 1...Bxf3!
- 1...Kf5
- 1.Bxf3?
- threat
- 2.Sd3#
- 2.Qxb8#
- 1...Re3
- 2.Qxb8#
- 1...Re4
- 2.Rxe4#
- 2.Qxb8#
- 1...Bc2
- 2.Qxb8#
- 1...Be2
- 2.Re4#
- 2.Qxb8#
- 1...Bd6
- 2.Sd3#
- 2.Sc6#
- 1...Ba7
- 2.Sd3#
- 2.Qc7#
- 1...Bc7
- 2.Sd3#
- 2.Qxc7#
- 1...Sc1
- 2.Qd4#
- 2.Qc5#
- 2.Qxb8#
- 1...Sc5
- 2.Qxc5#
- 2.Qxb8#
- 1...Sf6
- 2.Sd3#
- 1...Bxf3+!
- threat
- 1.Rd4?
- threat
- 2.Sc6#
- 1...Sxd4
- 2.Qc5#
- 1...Rf6
- 2.Sd3#
- 1...Sa5
- 2.Qc5#
- 1...Sf6!
- threat
- 1.Rf4?
- threat
- 2.Sg6#
- 1...Rxg3
- 2.Rf5#
- 1...Rxf4
- 2.Sd3#
- 1...Bc2
- 2.Sxf3#
- 1...Sf8
- 2.Rh5#
- 1...Bd6!
- threat
- 1.Rc5+?
- 1...Sxc5
- 2.Qxc5#
- 1...Kd4!
- 1...Sxc5
- 1.Qb5+?
- 1...Sc5
- 2.Qxc5#
- 1...Kd6!
- 1...Sc5
- 1.Qc6?
- threat
- 2.Qd5#
- 1...Rd3
- 2.Sxd3#
- 1...Sf6!
- threat
- 1.Sc6+?
- Keys
- 1.Be4!
- threat
- 2.Qxb8#
- 1...Sd4
- 2.Qxd4#
- 1...Rd3
- 2.Sxd3#
- 1...Rf6
- 2.Sd3#
- 1...Rf7
- 2.Sd3#
- 1...Rf8
- 2.Sd3#
- 1...Bd6
- 2.Sc6#
- 1...Ba7
- 2.Qc7#
- 1...Bc7
- 2.Qxc7#
- 1...Sf6
- 2.Sg6#
- threat
- 1.Be4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 9
- Sets
- R(b);N_GUARD::R1(C)
- R(b);N_GUARD::R1(C),XR(b)
- R(e);N_GUARD::S(B)
- R(e);N_GUARD::S(B),XR(e)
- B(a);S_CUTR(b)::R1(C)
- B(h);N_GUARD::QAB(E)
- B(h);N_GUARD::QAB(E),XB(h)
- S(c);N_GUARD::QAR2(E),XS(c)
- Tries
- Try
- S(B);CHECK
- Vars
- K(f);S_FLIGHT::QAR2(E)
- Refutation
- K(f);P-FLIGHT
- Try
- S(D);CHECK,XR(e)
- Vars
- K(f);P-FLIGHT::P(A)
- Refutation
- B(a);P_PINB(H),XS(D)
- Try
- B(H);XR(e)
- Threat
- DUALS(2)
- Vars
- R(b);::QAB(E),XB(h)
- B(a);::QAB(E),XB(h)
- S(g);::S(B)
- Refutation
- B(a);CHECK,XB(H)
- Try
- R(C);
- Threat
- S(B)
- Vars
- S(c);N_GUARD,XR(C)::QAR2(E)
- R(e);N_GUARD::S(B)
- S(c);N_GUARD::QAR2(E)
- Refutation
- S(g);
- Try
- R(C);
- Threat
- S(D)
- Vars
- R(e);N_GUARD,XP(A)::R1(C)
- R(e);N_GUARD,XR(C)::S(B)
- B(a);N_GUARD::S(D),XR(e)
- S(g);N_GUARD::R(G)
- Refutation
- B(h);
- Try
- R(C);CHECK
- Vars
- S(c);OGATE,XR(C)::QAR2(E),XS(c)
- Refutation
- K(f);S_FLIGHT
- Try
- Q(E);CHECK
- Vars
- S(c);N_GUARD,P_SPINS(c)::QAR2(E),XS(c)
- Refutation
- K(f);S_FLIGHT
- Try
- Q(E);
- Threat
- QAR1(E)
- Vars
- R(e);N_GUARD::S(B),XR(e)
- Refutation
- S(g);
- Try
- Actual
- B(H);
- Threat
- QAB(E),XB(h)
- Vars
- S(c);N_GUARD::QAB1(E),XS(c)
- R(e);N_GUARD::S(B),XR(e)
- R(e);N_GUARD::S(B)
- B(h);SBLOCK::S(B)
- B(h);N_GUARD::QAB(E)
- B(h);N_GUARD::QAB(E),XB(h)
- S(g);SBLOCK::S(D)
Developed and maintained by Brian Stephenson.
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