MESON Chess Problem Database
Problem Display
PID: 273997 (8/3Qp3/1pRp1pK1/3k1rp1/1p3pR1/1Np2P2/2P3N1/8 w - - 0 1)
Subrahmanyam, Swaminatha
The Problemist, 1933
#2
8 + 10
SOLUTION
- SOUND
- Sets
- 1...Ke5
- 2.Qxf5#
- 1...b5
- 2.Rc5#
- 1...e5
- 2.Qxd6#
- 1...e6
- 2.Qxd6#
- 1...Ke5
- Tries
- 1.Kxf5?
- 1...b5
- 2.Rc5#
- 1...e5
- 2.Qxd6#
- 1...e6+!
- 1...b5
- 1.Kf7?
- 1...Ke5
- 2.Qe6#
- 1...b5
- 2.Rc5#
- 1...e5
- 2.Qxd6#
- 1...e6
- 2.Qxd6#
- 1...Re5!
- 1...Ke5
- 1.Se1?
- 1...Ke5
- 2.Qxf5#
- 1...b5
- 2.Rc5#
- 1...e5
- 2.Qxd6#
- 1...e6
- 2.Qxd6#
- 1...Re5!
- 1...Ke5
- 1.Se3+?
- 1...Ke5
- 2.Qxf5#
- 2.Qxe7#
- 1...fxe3!
- 1...Ke5
- 1.Rxb6?
- 1...Kc4
- 2.Se3#
- 1...Ke5
- 2.Qxf5#
- 1...e5
- 2.Qf7#
- 1...e6
- 2.Qb5#
- 1...Re5!
- 1...Kc4
- 1.Rxd6+?
- 1...Kc4
- 2.Se3#
- 2.Rd4#
- 1...Ke5
- 2.Rd5#
- 2.Re6#
- 2.Qe6#
- 2.Qxe7#
- 1...exd6!
- 1...Kc4
- 1.Rc7?
- 1...Ke5
- 2.Qxf5#
- 1...b5
- 2.Rc5#
- 1...e5
- 2.Qf7#
- 1...e6
- 2.Qb5#
- 1...Re5!
- 1...Ke5
- 1.Rc8?
- 1...Ke5
- 2.Qxf5#
- 1...b5
- 2.Rc5#
- 1...e5
- 2.Qf7#
- 1...e6
- 2.Qb5#
- 1...Re5!
- 1...Ke5
- 1.Qxe7?
- threat
- 2.Qxd6#
- 2.Qe4#
- 1...Re5
- 2.Qxd6#
- 1...Kxc6!
- threat
- 1.Kxf5?
- Keys
- 1.Rc4!
- 1...Kxc4
- 2.Se3#
- 1...Ke5
- 2.Qxf5#
- 1...Re5
- 2.Rd4#
- 1...b5
- 2.Rc5#
- 1...e5
- 2.Qf7#
- 1...e6
- 2.Qb5#
- 1...Kxc4
- 1.Rc4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- K(d);N_GUARD,N_SPINP(h),P-FLIGHT,S_CUTP(j)::QAR1(H),XR(e)
- P(g);N_GUARD::R1(F)
- P(j);N_GUARD::QAR1(H),XP(h)
- Tries
- Try
- K(G);S_FLIGHT,XR(e)
- Vars
- P(g);N_GUARD::R1(F)
- P(j);N_GUARD::QAR1(H),XP(h)
- Refutation
- P(j);CHECK
- Try
- K(G);S_FLIGHT
- Vars
- K(d);N_GUARD,N_SPINP(h),P-FLIGHT::QAR1(H)
- P(g);N_GUARD::R1(F)
- P(j);N_GUARD::QAR1(H),XP(h)
- Refutation
- R(e);
- Try
- S(B);
- Vars
- K(d);N_GUARD,N_SPINP(h),P-FLIGHT,S_CUTP(j)::QAR1(H),XR(e)
- P(g);N_GUARD::R1(F)
- P(j);N_GUARD::QAR1(H),XP(h)
- Refutation
- R(e);
- Try
- S(B);CHECK
- Refutation
- P(c);XS(B)
- Try
- R(F);XP(g)
- Vars
- K(d);N_GUARD,N_SPINP(h),P_SPINP(c),S_FLIGHT::S(B)
- K(d);N_GUARD,N_SPINP(h),P-FLIGHT,S_CUTP(j)::QAR1(H),XR(e)
- P(j);OGATE,SBLOCK::QAB(H)
- P(j);SBLOCK::QAR2(H)
- Refutation
- R(e);
- Try
- R(F);CHECK,XP(h)
- Refutation
- P(j);P_SPINP(j),XR(F)
- Try
- R(F);
- Vars
- K(d);N_SPINP(h),P-FLIGHT,S_CUTP(j)::QAR1(H),XR(e)
- P(g);N_GUARD::R1(F)
- P(j);OGATE,SBLOCK::QAB(H)
- P(j);SBLOCK::QAR2(H)
- Refutation
- R(e);
- Try
- R(F);
- Vars
- K(d);N_SPINP(h),P-FLIGHT,S_CUTP(j)::QAR1(H),XR(e)
- P(g);N_GUARD::R1(F)
- P(j);OGATE,SBLOCK::QAB(H)
- P(j);SBLOCK::QAR2(H)
- Refutation
- R(e);
- Try
- Q(H);N_PINP(h),XP(j)
- Threat
- DUALS(2)
- Vars
- R(e);::QAR1(H),XP(h)
- Refutation
- K(d);S_FLIGHT,XR(F)
- Try
- Actual
- R(F);
- Vars
- K(d);N_GUARD,N_SPINP(h),P_SPINP(c),S_FLIGHT,XR(F)::S(B)
- K(d);N_GUARD,N_SPINP(h),P-FLIGHT,S_CUTP(j)::QAR1(H),XR(e)
- R(e);SBLOCK::R1(F)
- P(g);N_GUARD::R1(F)
- P(j);OGATE,SBLOCK::QAB(H)
- P(j);SBLOCK::QAR2(H)
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