MESON Chess Problem Database

Problem Display
PID: 253321 (Q2R4/8/N2bp3/B7/1p1k4/RpNB2P1/4K3/8 w - - 0 1)

Gittins, Frederick Richard

The Field, 1911

(First published on Sat Jun 24 1911)

Q2R4/8/N2bp3/B7/1p1k4/RpNB2P1/4K3/8

#2

9 + 5

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...b2
      • 2.Qe4#
    • 1...bxa3
      • 2.Qe4#
    • 1...bxc3
      • 2.Qe4#
    • 1...e5
      • 2.Sb5#
  • Tries
    • 1.Kd2?
      • threat
        • 2.Qe4#
      • 1...bxc3+
        • 2.Bxc3#
      • 1...Ke5!
    • 1.Rd7?
      • 1...Ke5
        • 2.Qh8#
      • 1...bxa3
        • 2.Qe4#
      • 1...bxc3
        • 2.Qe4#
      • 1...b2
        • 2.Qe4#
      • 1...e5
        • 2.Sb5#
      • 1...Kxc3!
    • 1.Qf3?
      • 1...Ke5
        • 2.Qf4#
      • 1...bxa3
        • 2.Qe4#
        • 2.Qe3#
        • 2.Qf4#
      • 1...bxc3
        • 2.Qe4#
      • 1...b2
        • 2.Qe4#
        • 2.Qe3#
        • 2.Qf4#
      • 1...e5
        • 2.Sb5#
      • 1...Kxc3!
    • 1.Qd5+?
      • 1...Kxc3
        • 2.Rxb3#
      • 1...exd5!
    • 1.Qb7?
      • 1...Ke5
        • 2.Qg7#
      • 1...bxa3
        • 2.Qe4#
      • 1...bxc3
        • 2.Qe4#
      • 1...b2
        • 2.Qe4#
      • 1...e5
        • 2.Sb5#
        • 2.Qxb4#
      • 1...Kxc3!
    • 1.Qa7+?
      • 1...Ke5
        • 2.Qg7#
      • 1...Kxc3!
  • Keys
    • 1.Qh1!
      • 1...Kxc3
        • 2.Qa1#
      • 1...Ke5
        • 2.Qh8#
      • 1...bxa3
        • 2.Qe4#
      • 1...bxc3
        • 2.Qe4#
      • 1...b2
        • 2.Qe4#
      • 1...e5
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(a);::QAR1(H)
    • P(b);XR(B)::QAR1(H)
    • P(b);XS(C)::QAR1(H)
    • P(e);SBLOCK::S(C)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Threat
        • QAR1(H)
      • Vars
        • P(b);CHECK,OGATE,XS(C)::B(F),XP(b)
      • Refutation
        • K(c);N_SPINB(d),S_FLIGHT
    • Try
      • R(I);
      • Vars
        • K(c);N_SPINB(d),S_CUTP(e),S_FLIGHT::QAB(H)
        • P(b);XR(B)::QAR1(H)
        • P(b);XS(C)::QAR1(H)
        • P(a);::QAR1(H)
        • P(e);SBLOCK::S(C)
      • Refutation
        • K(c);N_SPINB(d),P_SPINP(a),S_FLIGHT,XS(C)
    • Try
      • Q(H);
      • Vars
        • K(c);N_GUARD,N_SPINB(d),S_FLIGHT::QAB1(H)
        • P(b);XS(C)::QAR1(H)
        • P(e);SBLOCK::S(C)
      • Refutation
        • K(c);N_SPINB(d),P_SPINP(a),S_FLIGHT,XS(C)
    • Try
      • Q(H);CHECK,N_PINB(d)
      • Vars
        • K(c);P_SPINP(a),S_CUTP(e),S_FLIGHT,XS(C)::R1(B),XP(a)
      • Refutation
        • P(e);XQ(H)
    • Try
      • Q(H);
      • Vars
        • K(c);N_SPINB(d),S_CUTP(e),S_FLIGHT::QAB(H)
        • P(b);XR(B)::QAR1(H)
        • P(b);XS(C)::QAR1(H)
        • P(a);::QAR1(H)
      • Refutation
        • K(c);N_SPINB(d),P_SPINP(a),S_FLIGHT,XS(C)
    • Try
      • Q(H);CHECK
      • Vars
        • K(c);N_SPINB(d),S_CUTP(e),S_FLIGHT::QAB(H)
      • Refutation
        • K(c);N_SPINB(d),P_SPINP(a),S_FLIGHT,XS(C)
  • Actual
    • Q(H);
    • Vars
      • K(c);N_SPINB(d),OGATEB,P_SPINP(a),S_FLIGHT,XS(C)::QAB(H)
      • K(c);N_SPINB(d),S_CUTP(e),S_FLIGHT::QAB(H)
      • P(b);XR(B)::QAR1(H)
      • P(b);XS(C)::QAR1(H)
      • P(a);::QAR1(H)
      • P(e);SBLOCK::S(C)
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