MESON Chess Problem Database
Problem Display
PID: 107634 (3K4/bNQ1p3/5nn1/4P1R1/r2k2p1/2p1NP2/1RP2P2/8 w - - 0 1)
Bakcsi, Gyorgy
2nd Comm., Stella Polaris, 1973
#2
10 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Rb4#
- 2.Qc4#
- 1...Ra2
- 2.Rb4#
- 2.Qc4#
- 1...Ra3
- 2.Rb4#
- 2.Qc4#
- 1...Rb4
- 2.Rxb4#
- 1...Rc4
- 2.Qxc4#
- 1...Ra5
- 2.Rb4#
- 2.Qc4#
- 1...Ra6
- 2.Rb4#
- 2.Qc4#
- 1...Bc5
- 2.Qxc5#
- 1...Bb6
- 2.Qxb6#
- 1...Bb8
- 2.Qb6#
- 2.Qc5#
- 1...Sd5
- 2.Sf5#
- 1...Sh5
- 2.Qd7#
- 1...Sd7
- 2.Qxd7#
- 1...Sh7
- 2.Qd7#
- 1...Sg8
- 2.Qd7#
- 1...Sxe5
- 2.Qxe5#
- 1...Ra1
- Tries
- 1.Sa5?
- threat
- 2.Sb3#
- 2.Qxa7#
- 1...Rxa5
- 2.Rb4#
- 2.Qc4#
- 1...cxb2
- 2.Sb3#
- 1...Ra3
- 2.Rb4#
- 2.Qc4#
- 2.Qxa7#
- 1...Rb4
- 2.Rxb4#
- 1...Rc4
- 2.Sb3#
- 2.Qxc4#
- 1...Bc5
- 2.Sb3#
- 2.Sc6#
- 1...Bb6
- 2.Sb3#
- 2.Qxb6#
- 1...Bb8
- 2.Sb3#
- 2.Qb6#
- 1...Se4
- 2.Sb3#
- 1...Sd5
- 2.Sf5#
- 2.Sb3#
- 1...Sd7
- 2.Sb3#
- 1...gxf3!
- threat
- 1.Ra2?
- threat
- 2.Rxa4#
- 1...Rxa2
- 2.Qc4#
- 1...Sxe5
- 2.Qxe5#
- 1...Ra3
- 2.Qc4#
- 1...Rc4
- 2.Qxc4#
- 1...Ra5
- 2.Qc4#
- 1...Ra6
- 2.Qc4#
- 1...Bc5
- 2.Qxc5#
- 1...Sd5
- 2.Sf5#
- 1...Rb4!
- threat
- 1.Qd6+?
- 1...Sd5
- 2.Qxd5#
- 1...exd6!
- 1...Sd5
- 1.Qc6?
- threat
- 2.Qxa4#
- 1...Bb6+
- 2.Qxb6#
- 1...Sxe5
- 2.Sf5#
- 1...Ra1
- 2.Rb4#
- 2.Qc4#
- 1...Ra2
- 2.Rb4#
- 2.Qc4#
- 1...Ra3
- 2.Rb4#
- 2.Qc4#
- 1...Rb4
- 2.Rxb4#
- 1...Rc4
- 2.Qxc4#
- 1...Ra5
- 2.Rb4#
- 2.Qc4#
- 1...Ra6
- 2.Rb4#
- 2.Qc4#
- 1...Bc5
- 2.Qxc5#
- 1...Sd5
- 2.Qxd5#
- 1...cxb2!
- threat
- 1.Qd7+?
- 1...Sd5
- 2.Qxd5#
- 1...Sxd7!
- 1...Sd5
- 1.exf6?
- threat
- 2.Rd5#
- 2.Qd7#
- 1...cxb2
- 2.Rd5#
- 1...Ra5
- 2.Rb4#
- 2.Qc4#
- 1...Ra6
- 2.Rb4#
- 2.Rd5#
- 2.Qc4#
- 1...Bc5
- 2.Rd5#
- 2.Qxc5#
- 1...Bb6
- 2.Rd5#
- 2.Qxb6#
- 1...Bb8
- 2.Rd5#
- 2.Qb6#
- 2.Qc5#
- 1...Sf4
- 2.Qxf4#
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sf8
- 2.Rxg4#
- 2.Rd5#
- 2.Qf4#
- 2.Qe5#
- 1...e5
- 2.Qd6#
- 2.Qd7#
- 1...e6
- 2.Qd6#
- 2.Qd7#
- 1...gxf3!
- threat
- 1.Sa5?
- Keys
- 1.Qa5!
- threat
- 2.Qxa4#
- 1...Bb6+
- 2.Qxb6#
- 1...Rxa5
- 2.Rb4#
- 1...Sxe5
- 2.Qxe5#
- 1...cxb2
- 2.Qd2#
- 1...Ra1
- 2.Rb4#
- 2.Qb4#
- 1...Ra2
- 2.Rb4#
- 2.Qb4#
- 1...Ra3
- 2.Rb4#
- 2.Qb4#
- 1...Rb4
- 2.Rxb4#
- 2.Qxb4#
- 1...Rc4
- 2.Sf5#
- 1...Bc5
- 2.Qxc5#
- 1...Sd5
- 2.Qxd5#
- threat
- 1.Qa5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- R(b);N_GUARD::R(A),XR(b)
- R(b);N_GUARD::QAR1(I),XR(b)
- B(g);N_GUARD::QAB1(I),XB(g)
- B(g);N_GUARD,P_PINQ(I)::QAB(I),XB(g)
- S(e);SBLOCK::S(D)
- S(e);N_GUARD::QAR(I)
- S(e);N_GUARD::QAR(I),XS(e)
- S(f);OGATE,XP(F)::QAB1(I),XS(f)
- Tries
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- P(a);XR(A)::S(H)
- R(b);N_GUARD::R(A),XR(b)
- S(e);::S(H)
- Refutation
- P(d);XP(E)
- Try
- R(A);
- Threat
- R(A),XR(b)
- Vars
- R(b);N_GUARD,XR(A)::QAR1(I)
- S(f);OGATE,XP(F)::QAB1(I),XS(f)
- R(b);N_GUARD::QAR1(I)
- R(b);N_GUARD::QAR1(I),XR(b)
- B(g);N_GUARD::QAB1(I),XB(g)
- S(e);SBLOCK::S(D)
- Refutation
- R(b);
- Try
- Q(I);CHECK
- Vars
- S(e);N_GUARD,P_SPINS(e)::QAR1(I),XS(e)
- Refutation
- P(h);XQ(I)
- Try
- Q(I);
- Threat
- QAR(I),XR(b)
- Vars
- B(g);CHECK,N_GUARD::QAB(I),XB(g)
- S(f);SBLOCK,XP(F)::S(D)
- R(b);N_GUARD::R(A),XR(b)
- R(b);N_GUARD::QAR1(I),XR(b)
- B(g);N_GUARD::QAB1(I),XB(g)
- S(e);N_GUARD::QAR1(I),XS(e)
- Refutation
- P(a);XR(A)
- Try
- Q(I);CHECK
- Vars
- S(e);N_GUARD,P_SPINS(e)::QAR1(I),XS(e)
- Refutation
- S(e);XQ(I)
- Try
- P(F);XS(e)
- Threat
- DUALS(2)
- Vars
- P(a);XR(A)::R1(G)
- S(f);N_GUARD::QAB1(I),XS(f)
- Refutation
- P(d);XP(E)
- Try
- Actual
- Q(I);
- Threat
- QAR(I),XR(b)
- Vars
- B(g);CHECK,N_GUARD::QAB(I),XB(g)
- R(b);N_GUARD,XQ(I)::R(A)
- S(f);OGATE,XP(F)::QAB1(I),XS(f)
- P(a);OGATE,XR(A)::QAR2(I)
- R(b);SBLOCK::S(D)
- B(g);N_GUARD::QAB1(I),XB(g)
- S(e);N_GUARD::QAR1(I),XS(e)
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