MESON Chess Problem Database

Problem Display
PID: 226690 (8/3p1N2/p2P4/pp3pN1/5kpB/5r2/3K4/1R3Q2 w - - 0 1)

Rudd, Charles Dember

Sunday Chronicle, 1945

(First published on Sun Dec 2 1945)

8/3p1N2/p2P4/pp3pN1/5kpB/5r2/3K4/1R3Q2

#2

7 + 8

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf1
      • 2.Rxf1#
    • 1...Rf2+
      • 2.Qxf2#
    • 1...g3
      • 2.Qxf3#
    • 1...a4
      • 2.Rb4#
    • 1...b4
      • 2.Qc4#
  • Tries
    • 1.Ke2?
      • 1...Rf2+
        • 2.Qxf2#
      • 1...Rxf1
        • 2.Rxf1#
      • 1...g3
        • 2.Qxf3#
      • 1...a4
        • 2.Rb4#
      • 1...b4!
    • 1.Be1?
      • 1...Rf2+
        • 2.Qxf2#
      • 1...g3
        • 2.Qxf3#
      • 1...a4
        • 2.Rb4#
      • 1...b4
        • 2.Qc4#
      • 1...Rxf1!
    • 1.Ra1?
      • 1...Rf2+
        • 2.Qxf2#
      • 1...Rxf1
        • 2.Rxf1#
      • 1...g3
        • 2.Qxf3#
      • 1...b4
        • 2.Qc4#
      • 1...a4!
    • 1.Rc1?
      • 1...Rf2+
        • 2.Qxf2#
      • 1...Rxf1
        • 2.Rxf1#
      • 1...g3
        • 2.Qxf3#
      • 1...b4
        • 2.Rc4#
        • 2.Qc4#
      • 1...a4!
    • 1.Rd1?
      • 1...Rf2+
        • 2.Qxf2#
      • 1...Rxf1
        • 2.Rxf1#
      • 1...g3
        • 2.Qxf3#
      • 1...b4
        • 2.Qc4#
      • 1...a4!
    • 1.Re1?
      • 1...Rf2+
        • 2.Qxf2#
      • 1...Rxf1
        • 2.Rxf1#
      • 1...g3
        • 2.Qxf3#
      • 1...b4
        • 2.Qc4#
      • 1...a4!
    • 1.Rb2?
      • 1...Rf2+
        • 2.Qxf2#
      • 1...g3
        • 2.Qxf3#
      • 1...a4
        • 2.Rb4#
      • 1...b4
        • 2.Qc4#
      • 1...Rxf1!
    • 1.Qe2?
      • threat
        • 2.Qe5#
      • 1...g3
        • 2.Qxf3#
      • 1...Rf2
        • 2.Qxf2#
      • 1...Re3
        • 2.Qxe3#
      • 1...Rd3+!
    • 1.Qg1?
      • threat
        • 2.Qd4#
      • 1...Rf2+
        • 2.Qxf2#
      • 1...Re3
        • 2.Qxe3#
      • 1...Rd3+!
    • 1.Qf2?
      • threat
        • 2.Bg3#
        • 2.Qd4#
      • 1...g3
        • 2.Qd4#
        • 2.Qxf3#
      • 1...Rxf2+!
  • Keys
    • 1.Rb3!
      • 1...Rf2+
        • 2.Qxf2#
      • 1...Rxf1
        • 2.Bg3#
      • 1...g3
        • 2.Qxf3#
      • 1...a4
        • 2.Rb4#
      • 1...b4
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • R(a);N_SPINR(a),OGATE,XQ(B)::R(A),XR(a)
    • R(a);CHECK,OGATEB::QAR2(B),XR(a)
    • P(c);N_GUARD::QAR1(B),XR(a)
    • P(d);N_GUARD::R(A)
    • P(e);N_GUARD::QAR(B)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • R(a);CHECK,OGATEB::QAR2(B),XR(a)
        • R(a);N_SPINR(a),OGATE,XQ(B)::R(A),XR(a)
        • P(c);N_GUARD::QAR1(B),XR(a)
        • P(d);N_GUARD::R(A)
      • Refutation
        • P(e);
    • Try
      • B(D);
      • Vars
        • R(a);CHECK,OGATEB::QAR2(B),XR(a)
        • P(c);N_GUARD::QAR1(B),XR(a)
        • P(d);N_GUARD::R(A)
        • P(e);N_GUARD::QAR(B)
      • Refutation
        • R(a);N_SPINR(a),XQ(B)
    • Try
      • R(A);
      • Vars
        • R(a);CHECK,OGATEB::QAR2(B),XR(a)
        • R(a);N_SPINR(a),OGATE,XQ(B)::R(A),XR(a)
        • P(c);N_GUARD::QAR1(B),XR(a)
        • P(e);N_GUARD::QAR(B)
      • Refutation
        • P(d);
    • Try
      • R(A);
      • Vars
        • R(a);CHECK,OGATEB::QAR2(B),XR(a)
        • R(a);N_SPINR(a),OGATE,XQ(B)::R(A),XR(a)
        • P(c);N_GUARD::QAR1(B),XR(a)
      • Refutation
        • P(d);
    • Try
      • R(A);
      • Vars
        • R(a);CHECK,OGATEB::QAR2(B),XR(a)
        • R(a);N_SPINR(a),OGATE,XQ(B)::R(A),XR(a)
        • P(c);N_GUARD::QAR1(B),XR(a)
        • P(e);N_GUARD::QAR(B)
      • Refutation
        • P(d);
    • Try
      • R(A);
      • Vars
        • R(a);CHECK,OGATEB::QAR2(B),XR(a)
        • R(a);N_SPINR(a),OGATE,XQ(B)::R(A),XR(a)
        • P(c);N_GUARD::QAR1(B),XR(a)
        • P(e);N_GUARD::QAR(B)
      • Refutation
        • P(d);
    • Try
      • R(A);
      • Vars
        • R(a);CHECK,OGATEB::QAR2(B),XR(a)
        • P(c);N_GUARD::QAR1(B),XR(a)
        • P(d);N_GUARD::R(A)
        • P(e);N_GUARD::QAR(B)
      • Refutation
        • R(a);N_SPINR(a),XQ(B)
    • Try
      • Q(B);N_PINR(a)
      • Threat
        • QAB1(B)
      • Vars
        • P(c);N_GUARD::QAR1(B),XR(a)
        • R(a);OGATEB,P_PINQ(B)::QAR2(B),XR(a)
        • R(a);N_GUARD::QAB1(B),XR(a)
      • Refutation
        • R(a);CHECK
    • Try
      • Q(B);N_PINR(a)
      • Threat
        • QAR2(B)
      • Vars
        • R(a);CHECK,OGATEB::QAR2(B),XR(a)
        • R(a);N_GUARD::QAB1(B),XR(a)
      • Refutation
        • R(a);CHECK
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Refutation
        • R(a);CHECK,N_SPINR(a),XQ(B)
  • Actual
    • R(A);
    • Vars
      • R(a);CHECK,OGATEB::QAR2(B),XR(a)
      • R(a);N_SPINR(a),XQ(B)::B(D)
      • P(c);N_GUARD::QAR1(B),XR(a)
      • P(d);N_GUARD::R(A)
      • P(e);N_GUARD::QAR(B)
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