MESON Chess Problem Database

Problem Display
PID: 55523 (8/8/8/1B6/2r4p/1R5K/k1N5/1N2Q3 w - - 0 1)

Loyd, Sam

Hartford Globe, 1878

8/8/8/1B6/2r4p/1R5K/k1N5/1N2Q3

#2

6 + 3

5206 Sam Loyd and His Chess Problems 1913

SOLUTION

  • SOUND
  • Tries
    • 1.Sd2?
      • threat
        • 2.Qa1#
        • 2.Qb1#
      • 1...Rxc2
        • 2.Qb1#
      • 1...Rc3+!
    • 1.Sd4?
      • 1...Rc3+
        • 2.Sxc3#
      • 1...Ka1
        • 2.Sc3#
      • 1...Rc1
        • 2.Qa5#
      • 1...Rc2
        • 2.Qa5#
      • 1...Ra4
        • 2.Sc3#
      • 1...Rb4
        • 2.Sc3#
      • 1...Rc5
        • 2.Qa5#
      • 1...Rc6
        • 2.Qa5#
      • 1...Rc7
        • 2.Qa5#
      • 1...Rc8
        • 2.Qa5#
      • 1...Rxd4!
    • 1.Qc3?
      • threat
        • 2.Rb2#
        • 2.Qb2#
      • 1...Rb4
        • 2.Sxb4#
        • 2.Qb2#
      • 1...Rxc3+!
    • 1.Qb4?
      • threat
        • 2.Rb2#
        • 2.Ra3#
        • 2.Qa3#
      • 1...Rc3+
        • 2.Sxc3#
      • 1...Rxc2
        • 2.Ra3#
        • 2.Qa3#
        • 2.Qa4#
      • 1...Rxb4!
    • 1.Qa5+?
      • 1...Ra4
        • 2.Qxa4#
      • 1...Kxb3!
  • Keys
    • 1.Sa1!
      • 1...Rc3+
        • 2.Sxc3#
      • 1...Kxa1
        • 2.Sc3#
      • 1...Rc1
        • 2.Qa5#
      • 1...Rc2
        • 2.Qa5#
      • 1...Ra4
        • 2.Sc3#
      • 1...Rb4
        • 2.Sc3#
      • 1...Rd4
        • 2.Sc3#
      • 1...Re4
        • 2.Sc3#
      • 1...Rf4
        • 2.Sc3#
      • 1...Rg4
        • 2.Sc3#
      • 1...Rc5
        • 2.Qa5#
      • 1...Rc6
        • 2.Qa5#
      • 1...Rc7
        • 2.Qa5#
      • 1...Rc8
        • 2.Qa5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 14
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);XS(C)::QAB1(B)
      • Refutation
        • R(b);CHECK
    • Try
      • S(C);
      • Vars
        • R(b);CHECK,N_GUARD::S(A),XR(b)
        • K(a);P-FLIGHT::QAR(B)+S(A)
        • R(b);N_GUARD::QAR(B)
        • R(b);N_GUARD::S(A)
      • Refutation
        • R(b);XS(C)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Refutation
        • R(b);CHECK,XQ(B)
    • Try
      • Q(B);
      • Threat
        • DUALS(3)
      • Vars
        • R(b);CHECK,N_GUARD::S(A),XR(b)
      • Refutation
        • R(b);XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAR2(B),XR(b)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
  • Actual
    • S(C);
    • Vars
      • R(b);CHECK,N_GUARD::S(A),XR(b)
      • K(a);P-FLIGHT,XS(C)::QAR(B)+S(A)
      • R(b);N_GUARD::QAR(B)
      • R(b);N_GUARD::S(A)
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