MESON Chess Problem Database

Problem Display
PID: 138899 (2R3B1/3b4/2n1rN2/1q6/1Pk1Nb1r/2P1BQp1/P1R1K2p/5n2 w - - 0 1)

Subrahmanyam, Swaminatha

1st Prize, Madras Daily Express, 1927

2R3B1/3b4/2n1rN2/1q6/1Pk1Nb1r/2P1BQp1/P1R1K2p/5n2

#2

11 + 10

56 The Problemist 1936

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe3
      • 2.Sd6#
    • 1...Bg5
      • 2.Sd6#
    • 1...Bd6
      • 2.Sxd6#
    • 1...Bh6
      • 2.Sd6#
    • 1...Sd2
      • 2.Sxd2#
    • 1...Sxe3
      • 2.Sd2#
  • Tries
    • 1.Bd4?
      • threat
        • 2.Qd3#
      • 1...Be3
        • 2.Sd6#
      • 1...Se3
        • 2.Sd2#
      • 1...Qh5!
    • 1.Qxf4?
      • threat
        • 2.Sd2#
        • 2.Sd6#
      • 1...Qxb4
        • 2.Sd6#
      • 1...Rxf4
        • 2.Sd6#
      • 1...Qa4
        • 2.Sd6#
      • 1...Qa6
        • 2.Sd6#
      • 1...Qa5
        • 2.Sd6#
      • 1...Qc5
        • 2.Sd6#
      • 1...Qd5
        • 2.Sd6#
      • 1...Qe5
        • 2.Sd6#
      • 1...Qf5
        • 2.Sd6#
      • 1...Qg5
        • 2.Sd6#
      • 1...Qb6
        • 2.Sd6#
      • 1...Qb7
        • 2.Sd6#
      • 1...Qb8
        • 2.Sd6#
      • 1...Sd2
        • 2.Sxd2#
        • 2.Sd6#
      • 1...Qh5+!
  • Keys
    • 1.Bc5!
      • threat
        • 2.Qd3#
      • 1...Sd4+
        • 2.cxd4#
      • 1...Sxb4
        • 2.cxb4#
      • 1...Be3
        • 2.Sd6#
      • 1...Se3
        • 2.Sd2#
      • 1...Se5
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • B(e);N_GUARD,XB(E)::S(H)
    • B(e);N_GUARD::S(H)
    • B(e);N_GUARD::S(H),XB(e)
    • S(a);N_GUARD::S(H),XS(a)
    • S(a);N_GUARD,XB(E)::S(H)
  • Tries
    • Try
      • B(E);P_SPINS(H)
      • Threat
        • QAB1(F)
      • Vars
        • B(e);N_PINS(H)::S(H)
        • S(a);N_PINS(H)::S(H)
      • Refutation
        • Q(g);P_PINQ(F)
    • Try
      • Q(F);XB(e)
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);XP(G)::QAR(F)+S(H),DCHECK
        • R(f);XQ(F)::S(H)
        • Q(g);::QAR(F)+S(H),DCHECK
        • Q(g);N_SPINS(h)::QAR(F)+S(H),DCHECK
        • Q(g);N_SPINR(i)::QAR(F)+S(H),DCHECK
      • Refutation
        • Q(g);CHECK
  • Actual
    • B(E);N_PINS(h),P_SPINS(H)
    • Threat
      • QAB1(F)
    • Vars
      • S(h);CHECK,OGATE::R(B)+P(D),XS(h)
      • S(h);OGATE,XP(G)::R(B)+P(D),XS(h)
      • B(e);N_PINS(H)::S(H)
      • S(a);N_PINS(H)::S(H)
      • S(h);N_PINS(H)::S(H)
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