MESON Chess Problem Database
Problem Display
PID: 27771 (4r1rB/n1pQ4/K1p3p1/4N2R/R2pkp1P/3N4/BbP1bPP1/1n6 w - - 0 1)
Dombrovskis, Alfreds A
Europe Echecs, 1962
#2
12 + 12
SOLUTION
- SOUND
- Sets
- 1...Rxe5
- 2.Rxe5#
- 1...Bc1
- 2.Rxd4#
- 2.Qxd4#
- 1...Ba3
- 2.Rxd4#
- 2.Qxd4#
- 1...Bd1
- 2.Sc5#
- 1...Bxd3+
- 2.cxd3#
- 1...Bf3
- 2.Sc5#
- 2.gxf3#
- 1...Bg4
- 2.Sc5#
- 1...Bxh5
- 2.Sc5#
- 1...Sc3
- 2.Rxd4#
- 2.Qxd4#
- 1...Sb5
- 2.Sc5#
- 2.Qxc6#
- 1...Sc8
- 2.Qxc6#
- 1...f3
- 2.Qg4#
- 1...c5
- 2.Bd5#
- 2.Qd5#
- 1...Rxe5
- Tries
- 1.Ka5?
- threat
- 2.Sc5#
- 1...Rxe5+
- 2.Rxe5#
- 1...Bxd3
- 2.cxd3#
- 1...Ba3
- 2.Rxd4#
- 2.Qxd4#
- 1...f3
- 2.Qg4#
- 1...c5
- 2.Sxc5#
- 2.Bd5#
- 2.Qd5#
- 1...Bc3+!
- threat
- 1.Kxa7?
- threat
- 2.Sc5#
- 2.Qxc6#
- 1...Rxe5
- 2.Rxe5#
- 1...Bxd3
- 2.Qxc6#
- 2.cxd3#
- 1...Bxh5
- 2.Sc5#
- 1...gxh5
- 2.Sc5#
- 1...Re6
- 2.Sc5#
- 1...Rd8
- 2.Sc5#
- 1...Ba3
- 2.Rxd4#
- 2.Qxc6#
- 2.Qxd4#
- 1...Sc3
- 2.Sc5#
- 2.Rxd4#
- 2.Qxd4#
- 1...f3
- 2.Qg4#
- 2.Qxc6#
- 1...c5
- 2.Sxc5#
- 2.Bd5#
- 2.Qc6#
- 2.Qd5#
- 1...g5
- 2.Sc5#
- 1...Ra8+!
- threat
- 1.Kb7?
- threat
- 2.Sc5#
- 1...Rxe5
- 2.Rxe5#
- 1...Bxd3
- 2.cxd3#
- 1...Ba3
- 2.Rxd4#
- 2.Qxd4#
- 1...f3
- 2.Qg4#
- 1...c5
- 2.Sxc5#
- 2.Bd5#
- 2.Qd5#
- 1...Rb8+!
- threat
- 1.Sxc6?
- threat
- 2.Bd5#
- 2.Qd5#
- 1...Re5
- 2.Rxe5#
- 1...Rd8
- 2.Bd5#
- 2.Re5#
- 2.Qe6#
- 2.Qe7#
- 1...Sc3
- 2.Rxd4#
- 2.Qxd4#
- 1...Bxd3+!
- threat
- 1.Bc4?
- threat
- 2.Sc5#
- 1...Rxe5
- 2.Rxe5#
- 1...Bxd3
- 2.Bxd3#
- 2.cxd3#
- 1...f3
- 2.Qg4#
- 1...c5
- 2.Sxc5#
- 2.Bd5#
- 2.Qd5#
- 1...Ba3!
- threat
- 1.Rc4?
- threat
- 2.Sc5#
- 1...Rxe5
- 2.Rxe5#
- 1...Bxd3
- 2.cxd3#
- 1...Ba3
- 2.Rxd4#
- 2.Qxd4#
- 1...c5
- 2.Sxc5#
- 1...f3!
- threat
- 1.f3+?
- 1...Ke3
- 2.Sc4#
- 1...Bxf3!
- 1...Ke3
- 1.Ka5?
- Keys
- 1.Sc4!
- threat
- 2.Sc5#
- 1...Bxd3
- 2.f3#
- 1...Re5
- 2.Rxe5#
- 1...Ba3
- 2.Qxd4#
- 1...f3
- 2.Qg4#
- 1...c5
- 2.Sxc5#
- 2.Qd5#
- threat
- 1.Sc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- R(k);OGATE,XS(H)::R1(I),XR(k)
- B(c);N_PINS(E)::S(E)
- B(c);CHECK,OGATE,XS(E)::P(B),XB(c)
- B(c);N_PINS(E),XR(I)::S(E)
- S(i);N_GUARD::QAB(K),XP(g)
- P(f);OGATEB::QAR2(K)
- Tries
- Try
- K(J);N_SPINS(E),P-FLIGHT
- Threat
- S(E)
- Vars
- R(k);CHECK,OGATE,XS(H)::R1(I),XR(k)
- B(c);OGATE,XS(E)::P(B),XB(c)
- P(f);OGATEB::QAR2(K)
- Refutation
- B(b);CHECK
- Try
- K(J);N_SPINS(E),P-FLIGHT,XS(i)
- Threat
- DUALS(2)
- Vars
- R(k);OGATE,XS(H)::R1(I),XR(k)
- B(c);XR(I)::S(E)
- P(h);XR(I)::S(E)
- R(k);::S(E)
- P(h);::S(E)
- Refutation
- R(k);CHECK
- Try
- K(J);N_SPINS(E),S_FLIGHT
- Threat
- S(E)
- Vars
- R(k);OGATE,XS(H)::R1(I),XR(k)
- B(c);OGATE,XS(E)::P(B),XB(c)
- P(f);OGATEB::QAR2(K)
- Refutation
- R(k);CHECK
- Try
- S(H);XP(g)
- Threat
- DUALS(2)
- Vars
- R(k);N_GUARD::R1(I),XR(k)
- Refutation
- B(c);CHECK,XS(E)
- Try
- B(A);N_PINP(d),N_SPINS(E)
- Threat
- S(E)
- Vars
- R(k);OGATE,XS(H)::R1(I),XR(k)
- P(f);OGATEB::QAR2(K)
- Refutation
- B(b);
- Try
- R(F);N_SPINS(E)
- Threat
- S(E)
- Vars
- R(k);OGATE,XS(H)::R1(I),XR(k)
- B(c);OGATE,P_PINR(F),XS(E)::P(B),XB(c)
- P(g);::S(E),XP(g)
- Refutation
- P(f);
- Try
- P(C);CHECK
- Vars
- K(e);N_SPINP(d),P-FLIGHT::S(H)
- Refutation
- B(c);N_PINS(E),XP(C)
- Try
- Actual
- S(H);N_PINP(d),N_SPINS(E)
- Threat
- S(E)
- Vars
- B(c);N_GUARD,P_PINS(H),XS(E)::P(C)
- R(k);N_GUARD::R1(I),XR(k)
- B(b);N_GUARD::QAR1(K),XP(d)
- P(f);OGATEB::QAR2(K)
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