MESON Chess Problem Database
Problem Display
PID: 274007 (3r1r2/2p1N3/RQ6/p3b3/2pP1P2/4k3/2B1N1P1/4K3 w - - 0 1)
Ivanovsky, Nikolai Aleksandrovich
Mat, 1972
#2
9 + 7
SOLUTION
- SOUND
- Sets
- 1...Rxd4
- 2.Sd5#
- 1...Rd5
- 2.Sxd5#
- 1...Ra8
- 2.Sd5#
- 1...Rb8
- 2.Sd5#
- 1...Rc8
- 2.Sd5#
- 1...Rde8
- 2.Sd5#
- 1...Rf5
- 2.Sxf5#
- 1...Rfe8
- 2.Sf5#
- 1...Rg8
- 2.Sf5#
- 1...Rh8
- 2.Sf5#
- 1...Bd6
- 2.Sd5#
- 1...Bf6
- 2.Sf5#
- 1...Rxd4
- Tries
- 1.Qxa5?
- threat
- 2.Qd2#
- 2.Qc3#
- 2.Qxe5#
- 1...Rxf4
- 2.Qd2#
- 2.Qc3#
- 1...Bxd4
- 2.Qd2#
- 1...Bxf4
- 2.Qd2#
- 2.Qc3#
- 1...Rd5
- 2.Sxd5#
- 2.Qd2#
- 2.Qc3#
- 1...Rf5
- 2.Sxf5#
- 2.Qd2#
- 2.Qc3#
- 1...Bd6
- 2.Sd5#
- 2.Qd2#
- 2.Qc3#
- 1...Bf6
- 2.Sf5#
- 2.Qd2#
- 2.Qc3#
- 1...Bg7
- 2.Qd2#
- 2.Qc3#
- 1...Bh8
- 2.Qd2#
- 2.Qc3#
- 1...c3
- 2.Qxc3#
- 2.Qxe5#
- 1...c5
- 2.Qd2#
- 2.Qc3#
- 1...Rxd4!
- threat
- 1.Qb2?
- threat
- 2.Qc1#
- 2.Qc3#
- 1...Bxd4
- 2.Qc1#
- 1...c3
- 2.Qc1#
- 2.Qxc3#
- 1...Rxd4!
- threat
- 1.Qb3+?
- 1...c3
- 2.Qxc3#
- 1...cxb3!
- 1...c3
- 1.Qc6?
- threat
- 2.Qf3#
- 2.Qe4#
- 1...Rxd4
- 2.Qf3#
- 1...Rd5
- 2.Sxd5#
- 1...Rxf4!
- threat
- 1.Qd6?
- threat
- 2.Sd5#
- 2.Qxe5#
- 1...Rxf4
- 2.Sd5#
- 1...Bxd4
- 2.Sd5#
- 1...Bxf4
- 2.Sd5#
- 1...Bxd6
- 2.Sd5#
- 1...cxd6
- 2.Sd5#
- 1...Rf5
- 2.Sd5#
- 2.Sxf5#
- 1...Bf6
- 2.Sd5#
- 2.Sf5#
- 1...Bg7
- 2.Sd5#
- 1...Bh8
- 2.Sd5#
- 1...c6
- 2.Qxe5#
- 1...Rxd6!
- threat
- 1.Qe6?
- threat
- 2.Qh3#
- 2.Qxe5#
- 1...Rxd4
- 2.Qh3#
- 1...Rd5
- 2.Sxd5#
- 2.Qh3#
- 1...Rf5
- 2.Sxf5#
- 1...Rg8
- 2.Sf5#
- 2.Qxe5#
- 1...Rh8
- 2.Sf5#
- 2.Qxe5#
- 1...Rxf4!
- threat
- 1.Qf6?
- threat
- 2.Sf5#
- 2.Qxe5#
- 1...Rxd4
- 2.Sf5#
- 1...Bxd4
- 2.Sf5#
- 1...Bxf4
- 2.Sf5#
- 1...Bxf6
- 2.Sf5#
- 1...Rd5
- 2.Sxd5#
- 2.Sf5#
- 1...Bd6
- 2.Sd5#
- 2.Sf5#
- 1...Rxf6!
- threat
- 1.Qg6?
- threat
- 2.Qe4#
- 2.Qg3#
- 1...Rxd4
- 2.Qg3#
- 1...Bxf4
- 2.Qe4#
- 1...Rf5
- 2.Sxf5#
- 2.Qg3#
- 1...Rg8
- 2.Sf5#
- 2.Qe4#
- 1...Rxf4!
- threat
- 1.Qxa5?
- Keys
- 1.Qh6!
- threat
- 2.Qh3#
- 1...Rxf4
- 2.Sf5#
- 1...Bxf4
- 2.Re6#
- 1...Rg8
- 2.Sf5#
- 1...Rh8
- 2.Sf5#
- threat
- 1.Qh6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 10
- Sets
- R(f);N_GUARD,P_SPINR(f),XP(E)::S(I)
- R(f);N_GUARD::S(I),XR(f)
- R(f);N_GUARD::S(I)
- R(g);N_GUARD::S(I),XR(g)
- R(g);N_GUARD::S(I)
- B(d);S_CUTR(f)::S(I)
- B(d);S_CUTR(g)::S(I)
- Tries
- Try
- Q(H);XP(c)
- Threat
- DUALS(3)
- Vars
- B(d);XP(E)::QAB1(H)
- Refutation
- R(f);XP(E)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- B(d);XP(E)::QAB(H)
- Refutation
- R(f);XP(E)
- Try
- Q(H);CHECK
- Vars
- P(b);P_SPINP(b)::QAR2(H),XP(b)
- Refutation
- P(b);XQ(H)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(f);XP(E)::QAR1(H)
- R(f);N_GUARD::S(I),XR(f)
- Refutation
- R(g);XP(F)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(g);XP(F)::S(I)
- B(d);XP(E)::S(I)
- B(d);XP(F)::S(I)
- B(d);XQ(H)::S(I)
- P(e);XQ(H)::S(I)
- B(d);::S(I)
- P(e);::QAR2(H),XB(d)
- Refutation
- R(f);XQ(H)
- Try
- Q(H);P_PINB(d)
- Threat
- DUALS(2)
- Vars
- R(f);XP(E)::QAR(H)
- R(g);N_GUARD::S(I),XR(g)
- Refutation
- R(g);XP(F)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(f);XP(E)::S(I)
- B(d);XP(E)::S(I)
- B(d);XP(F)::S(I)
- B(d);XQ(H)::S(I)
- Refutation
- R(g);XQ(H)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(f);XP(E)::QAR2(H)
- B(d);XP(F)::QAR1(H)
- Refutation
- R(g);XP(F)
- Try
- Actual
- Q(H);
- Threat
- QAR(H)
- Vars
- R(g);N_GUARD,P_SPINR(g),XP(F)::S(I)
- B(d);OGATEB,P_SPINB(d),XP(F)::R(G)
- R(g);N_GUARD::S(I)
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