MESON Chess Problem Database

Problem Display
PID: 17350 (3R3B/r2nNK2/3pP3/3Br1N1/1P1k4/3p1R2/b3Pq2/2Q1b3 w - - 0 1)

Mott-Smith, Geoffrey

HM., Christian Science Monitor, 1946

3R3B/r2nNK2/3pP3/3Br1N1/1P1k4/3p1R2/b3Pq2/2Q1b3

#2

11 + 9

14773 The Best American Chess Problems of 1946 1948

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Rxd3#
      • 2.Rf4#
    • 1...Qg3
      • 2.e3#
    • 1...Qh4
      • 2.Rxd3#
      • 2.e3#
    • 1...Qf1
      • 2.e3#
    • 1...Qg2
      • 2.Rxd3#
      • 2.e3#
    • 1...Qh2
      • 2.Rxd3#
      • 2.e3#
    • 1...Qxf3+
      • 2.Sxf3#
    • 1...Bc3
      • 2.Qf4#
    • 1...Bb1
      • 2.Qc4#
    • 1...Bc4
      • 2.Qxc4#
    • 1...Bxd5
      • 2.Sf5#
    • 1...Sf6
      • 2.Rxd3#
    • 1...dxe2
      • 2.Qf4#
    • 1...d2
      • 2.Qb2#
      • 2.Qa1#
      • 2.Qc3#
  • Tries
    • 1.Bb7?
      • threat
        • 2.Sf5#
      • 1...Qxf3+
        • 2.Sxf3#
      • 1...Bxe6+
        • 2.Sxe6#
      • 1...Bc3
        • 2.Qf4#
      • 1...Sf6
        • 2.Rxd3#
      • 1...Rxb7!
    • 1.exd7?
      • threat
        • 2.Se6#
      • 1...Qxf3+
        • 2.Sxf3#
      • 1...Bxd5+!
  • Keys
    • 1.Bc6!
      • threat
        • 2.Sf5#
      • 1...Qxf3+
        • 2.Sxf3#
      • 1...Bxe6+
        • 2.Sxe6#
      • 1...Bc3
        • 2.Qf4#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sb6
        • 2.Qc5#
      • 1...Sf6
        • 2.Rxd3#
      • 1...Sb8
        • 2.Qc5#
      • 1...Sf8
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 6
  • Sets
    • Q(c);N_GUARD,N_PINR(C)::P(B)
    • Q(c);N_GUARD::P(B)
    • Q(c);CHECK,XR(C)::S(F),XQ(c)
    • B(a);SBLOCK::QAR2(A)
    • B(b);N_GUARD::QAR1(A)
    • B(b);N_GUARD::QAR1(A),XB(b)
    • B(b);P_PINP(G),SBLOCK,XB(E)::S(H)
    • S(i);N_PINR(C),N_SPINR(f),P_PINS(H)::R1(C),XP(d)
    • P(d);XP(B)::QAR2(A)
  • Tries
    • Try
      • B(E);P_SPINP(G)
      • Threat
        • S(H)
      • Vars
        • Q(c);CHECK,XR(C)::S(F),XQ(c)
        • B(b);CHECK,XP(G)::S(F),XB(b)
        • B(a);SBLOCK::QAR2(A)
        • S(i);N_PINR(C),N_SPINR(f),P_SPINP(g)::R1(C),XP(d)
      • Refutation
        • R(h);XB(E)
    • Try
      • P(G);P_SPINB(E),XS(i)
      • Threat
        • S(F)
      • Vars
        • Q(c);CHECK,XR(C)::S(F),XQ(c)
      • Refutation
        • B(b);CHECK,XB(E)
  • Actual
    • B(E);P_SPINP(G)
    • Threat
      • S(H)
    • Vars
      • Q(c);CHECK,XR(C)::S(F),XQ(c)
      • B(b);CHECK,XP(G)::S(F),XB(b)
      • B(a);SBLOCK::QAR2(A)
      • S(i);N_GUARD,P_PINS(H),P_SPINP(g)::QAB1(A),XS(i)
      • S(i);N_GUARD,P_PINS(H),P_SPINP(g)::QAB1(A)
      • S(i);N_PINR(C),N_SPINR(f),P_PINS(H),P_SPINP(g)::R1(C),XP(d)
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