MESON Chess Problem Database

Problem Display
PID: 6373 (3NN1b1/K1PnpPP1/pp3b1Q/2pk2r1/qPR3n1/1P3PBB/8/2R1r3 w - - 0 1)

Subrahmanyam, Swaminatha

2nd Prize, BCPS 010. Ty., 1929

3NN1b1/K1PnpPP1/pp3b1Q/2pk2r1/qPR3n1/1P3PBB/8/2R1r3

#2

14 + 12

35 L'Italia Scacchistica 1930
56 The Problemist 1930
3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.fxe4#
    • 1...Ree5
      • 2.Rd1#
    • 1...Rge5
      • 2.Qd2#
    • 1...Be5
      • 2.Qe6#
    • 1...Se3
      • 2.Be6#
    • 1...Sge5
      • 2.Be6#
    • 1...e5
      • 2.fxg8Q#
      • 2.fxg8B#
  • Tries
    • 1.c8S?
      • threat
        • 2.Sc7#
      • 1...Be5
        • 2.Sxe7#
        • 2.Qe6#
      • 1...Qc6!
    • 1.c8B?
      • threat
        • 2.Sc7#
      • 1...Ree5
        • 2.Rd1#
      • 1...Rge5
        • 2.Qd2#
      • 1...Be5
        • 2.Qe6#
      • 1...Sge5
        • 2.Be6#
      • 1...Sde5
        • 2.Be6#
      • 1...e5
        • 2.fxg8Q#
        • 2.fxg8B#
      • 1...Qc6!
    • 1.fxg8Q+?
      • 1...Re6
        • 2.Qxe6#
      • 1...e6!
    • 1.fxg8B+?
      • 1...Re6
        • 2.Bxe6#
      • 1...e6!
  • Keys
    • 1.c8Q!
      • threat
        • 2.Sc7#
      • 1...Qc6
        • 2.Qxc6#
      • 1...Ree5
        • 2.Rd1#
      • 1...Rge5
        • 2.Qd2#
      • 1...Be5
        • 2.Qe6#
      • 1...Sge5
        • 2.Be6#
      • 1...Sde5
        • 2.Qe6#
      • 1...e5
        • 2.fxg8Q#
        • 2.fxg8B#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(a);OGATE::P(C),XR(a)
    • R(a);N_GUARD,S_CUTB(i)::R(A)
    • R(f);OGATE::QAR(H)
    • B(i);OGATE::QAB1(H)
    • S(c);OGATE::B(E)
    • P(k);N_GUARD,S_CUTR(a)::PXB(l)=Q
  • Tries
    • Try
      • P(J);
      • Threat
        • S(N)
      • Refutation
        • Q(b);
    • Try
      • P(J);
      • Threat
        • S(N)
      • Vars
        • R(a);N_GUARD,S_CUTB(i)::R(A)
        • R(f);OGATE::QAR(H)
        • B(i);OGATE::QAB1(H)
        • S(c);OGATE::B(E)
        • S(j);OGATE::B(J)
        • P(k);N_GUARD,S_CUTR(a)::PXB(l)=Q
      • Refutation
        • Q(b);
    • Try
      • P(K);CHECK,XB(l)
      • Vars
        • R(a);N_GUARD,P_SPINR(a)::QAB1(K),XR(a)
      • Refutation
        • P(k);P_SPINP(k)
    • Try
      • P(K);CHECK,XB(l)
      • Vars
        • R(a);N_GUARD,P_SPINR(a)::B(K),XR(a)
      • Refutation
        • P(k);P_SPINP(k)
  • Actual
    • P(J);
    • Threat
      • S(N)
    • Vars
      • Q(b);N_GUARD::QAB1(J),XQ(b)
      • R(a);N_GUARD,S_CUTB(i)::R(A)
      • R(f);OGATE::QAR(H)
      • B(i);OGATE::QAB1(H)
      • S(c);OGATE::B(E)
      • S(j);OGATE::QAB1(J)
      • P(k);N_GUARD,S_CUTR(a)::PXB(l)=Q
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