MESON Chess Problem Database

Problem Display
PID: 141299 (K3R3/8/1p6/1P6/2p1N3/3k4/R1b2Q2/3r4 w - - 0 1)

Larsen, Peder Andreas

Brighton Society, 1895

(First published on Sat Jun 15 1895)

K3R3/8/1p6/1P6/2p1N3/3k4/R1b2Q2/3r4

#2

6 + 5

14868 Pirnie Collection 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qd2#
    • 1...Rb1
      • 2.Qd2#
    • 1...Rc1
      • 2.Qd2#
    • 1...Re1
      • 2.Qd2#
    • 1...Rf1
      • 2.Qd2#
    • 1...Rg1
      • 2.Qd2#
    • 1...Rh1
      • 2.Qd2#
    • 1...Rd2
      • 2.Qxd2#
  • Tries
    • 1.Sc5+?
      • 1...bxc5
        • 2.Qe3#
      • 1...Kc3!
    • 1.Rxc2?
      • threat
        • 2.Rc3#
      • 1...c3
        • 2.Rxc3#
      • 1...Rc1
        • 2.Rd2#
        • 2.Qd2#
      • 1...Ra1+!
    • 1.Ra3+?
      • 1...c3
        • 2.Rxc3#
      • 1...Bb3!
    • 1.Ra7?
      • threat
        • 2.Rd7#
      • 1...Ra1
        • 2.Qd2#
      • 1...c3!
  • Keys
    • 1.Qf4!
      • 1...Ke2
        • 2.Sc5#
      • 1...Kd4
        • 2.Rd8#
      • 1...c3
        • 2.Sf2#
      • 1...Bb1
        • 2.Rd8#
      • 1...Ra1
        • 2.Qd2#
      • 1...Rb1
        • 2.Qd2#
      • 1...Rc1
        • 2.Qd2#
      • 1...Re1
        • 2.Qd2#
      • 1...Rf1
        • 2.Qd2#
      • 1...Rg1
        • 2.Qd2#
      • 1...Rh1
        • 2.Qd2#
      • 1...Rd2
        • 2.Qxd2#
      • 1...Bb3
        • 2.Rd8#
      • 1...Ba4
        • 2.Rd8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • R(a);N_GUARD,P_PINR(A)::QAR1(B)
    • R(a);N_GUARD::QAR1(B)
    • R(a);N_GUARD::QAR1(B),XR(a)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • P(e);XS(C)::QAR1(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(A);XB(b)
      • Threat
        • R1(A)
      • Vars
        • P(d);::R1(A),XP(d)
      • Refutation
        • R(a);CHECK
    • Try
      • R(A);CHECK
      • Vars
        • P(d);P_SPINP(d)::R1(A),XP(d)
      • Refutation
        • B(b);P_SPINB(b)
    • Try
      • R(A);
      • Threat
        • R(A)
      • Vars
        • R(a);N_GUARD,P_PINR(A)::QAR1(B)
      • Refutation
        • P(d);
  • Actual
    • Q(B);
    • Vars
      • K(c);P_SPINB(b),S_FLIGHT::R(F)+S(C)
      • K(c);P-FLIGHT::R(F)
      • P(d);SBLOCK::S(C)
      • B(b);::R(F)
      • R(a);N_GUARD,P_PINR(A)::QAR1(B)
      • R(a);N_GUARD::QAR1(B)
      • R(a);N_GUARD::QAR1(B),XR(a)
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