MESON Chess Problem Database
Problem Display
PID: 72020 (6Br/2pR1pB1/1pR4p/3n4/1QNpkpPb/K1p4N/4P3/8 w - - 0 1)
Feldmann, Tibor (aka Florian, Tibor)
Prize, Radio Ujsag, 1936
#2
10 + 11
| 136 | Problem Observer | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Bf2
- 2.Sxf2#
- 1...Bg5
- 2.Sf2#
- 1...Bf6
- 2.Sf2#
- 1...Be7
- 2.Sf2#
- 1...Bd8
- 2.Sf2#
- 1...Se3
- 2.Rxd4#
- 1...Sxb4
- 2.Rxd4#
- 1...Sf6
- 2.Qe7#
- 1...Se7
- 2.Rxd4#
- 1...f5
- 2.Bxd5#
- 2.Re6#
- 1...f6
- 2.Bxd5#
- 2.Re6#
- 1...Bf2
- Tries
- 1.Sd2+?
- 1...cxd2
- 2.Qxd4#
- 1...Ke3!
- 1...cxd2
- 1.Sd6+?
- 1...cxd6
- 2.Qxd4#
- 1...Ke3!
- 1...cxd6
- 1.Bxf7?
- threat
- 2.Bxd5#
- 2.Bg6#
- 2.Re6#
- 1...Sxb4
- 2.Bg6#
- 2.Re6#
- 2.Rxd4#
- 1...Re8
- 2.Bxd5#
- 2.Bg6#
- 1...Rf8
- 2.Bxd5#
- 2.Re6#
- 1...Bf6
- 2.Sf2#
- 2.Bxd5#
- 2.Bg6#
- 1...Se3
- 2.Re6#
- 2.Rxd4#
- 1...Sf6
- 2.Bg6#
- 2.Re6#
- 2.Re7#
- 2.Qe7#
- 1...Se7
- 2.Re6#
- 2.Rxd4#
- 1...Ra8+!
- threat
- 1.Bh7+?
- 1...f5
- 2.Bxf5#
- 2.Re6#
- 1...Rxh7!
- 1...f5
- 1.Re7+?
- 1...Bxe7
- 2.Sf2#
- 1...Sxe7!
- 1...Bxe7
- 1.Qc5?
- threat
- 2.Qxd4#
- 2.Qxd5#
- 1...Bf2
- 2.Sxf2#
- 2.Qxd5#
- 1...Bf6
- 2.Sf2#
- 2.Qxd5#
- 1...Be7
- 2.Sf2#
- 1...Se3
- 2.Rxd4#
- 2.Qxd4#
- 2.Qe5#
- 1...Sb4
- 2.Rxd4#
- 2.Qxd4#
- 2.Qe5#
- 2.Qf5#
- 1...Sf6
- 2.Rxd4#
- 2.Re7#
- 2.Qxd4#
- 2.Qe7#
- 2.Qe5#
- 2.Qf5#
- 1...Se7
- 2.Rxd4#
- 2.Qxd4#
- 2.Qe5#
- 1...d3
- 2.Qd4#
- 2.Qxd5#
- 1...f6
- 2.Bxd5#
- 2.Re6#
- 2.Qxd5#
- 1...bxc5!
- threat
- 1.Qd6?
- threat
- 2.Qe5#
- 2.Qxd5#
- 1...Bf6
- 2.Sf2#
- 2.Qxd5#
- 1...Be7
- 2.Sf2#
- 1...Se3
- 2.Qxf4#
- 2.Qe5#
- 2.Qxd4#
- 1...Sb4
- 2.Qxf4#
- 2.Qe5#
- 2.Qxd4#
- 1...Sf6
- 2.Re7#
- 2.Qxf4#
- 2.Qe5#
- 2.Qe7#
- 2.Qxd4#
- 1...Se7
- 2.Qxf4#
- 2.Qe5#
- 2.Qxd4#
- 1...f6
- 2.Bxd5#
- 2.Qxd5#
- 2.Qe6#
- 1...cxd6!
- threat
- 1.Qe7+?
- 1...Sxe7
- 2.Rxd4#
- 1...Bxe7+!
- 1...Sxe7
- 1.Qb1+?
- 1...d3
- 2.Qxd3#
- 1...c2!
- 1...d3
- 1.Qb5?
- threat
- 2.Qxd5#
- 1...Se3
- 2.Rxd4#
- 2.Qe5#
- 1...Sb4
- 2.Rxd4#
- 2.Qe5#
- 2.Qf5#
- 1...Sf6
- 2.Re7#
- 2.Qe5#
- 2.Qf5#
- 1...Se7
- 2.Rxd4#
- 2.Qe5#
- 1...Be7+!
- threat
- 1.Sd2+?
- Keys
- 1.Rxf7!
- threat
- 2.Re6#
- 1...Sxb4
- 2.Rxf4#
- 1...Se3
- 2.Rxf4#
- 1...Sf6
- 2.Re7#
- 1...Se7
- 2.Rxf4#
- 1...Bf6
- 2.Sf2#
- threat
- 1.Rxf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 0
- REMOVED MATES = 4
- Sets
- B(e);N_GUARD::S(C),XB(e)
- B(e);N_GUARD::S(C)
- B(e);N_GUARD,P_PINQ(D)::S(C)
- S(f);OGATE::R1(H),XP(b)
- S(f);OGATE,XQ(D)::R1(H),XP(b)
- S(f);N_GUARD,S_CUTB(e)::QAR(D)
- Tries
- Try
- S(E);CHECK,P_PINP(b)
- Vars
- P(a);XS(E)::QAR1(D),XP(b)
- Refutation
- K(c);N_SPINP(b),P-FLIGHT
- Try
- S(E);CHECK,P_PINP(b)
- Vars
- P(i);XS(E)::QAR1(D),XP(b)
- Refutation
- K(c);N_SPINP(b),P-FLIGHT
- Try
- B(J);XP(j)
- Threat
- DUALS(3)
- Refutation
- R(k);CHECK
- Try
- B(J);CHECK
- Refutation
- R(k);XB(J)
- Try
- R(H);CHECK
- Vars
- B(e);P_PINQ(D),XR(H)::S(C)
- Refutation
- S(f);XR(H)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- B(e);N_GUARD,P_PINQ(D)::S(C)
- Refutation
- P(g);XQ(D)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- B(e);N_GUARD,P_PINQ(D)::S(C)
- Refutation
- P(i);XQ(D)
- Try
- Q(D);CHECK
- Vars
- S(f);OGATE,XQ(D)::R1(H),XP(b)
- Refutation
- B(e);CHECK,XQ(D)
- Try
- Q(D);CHECK
- Vars
- P(b);P_SPINP(b)::QAB1(D),XP(b)
- Refutation
- P(a);P_SPINP(a)
- Try
- Q(D);
- Threat
- QAB1(D),XS(f)
- Refutation
- B(e);CHECK
- Try
- Actual
- R(H);XP(j)
- Threat
- R(G)
- Vars
- S(f);N_GUARD,XQ(D)::R1(H),XP(d)
- S(f);N_GUARD::R1(H),XP(d)
- S(f);N_GUARD,S_CUTB(e)::R(H)
- B(e);N_GUARD::S(C)
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