MESON Chess Problem Database

Problem Display
PID: 80598 (5b2/1n5B/3p4/4p3/R1PkN3/4R1r1/1K1B2r1/3Q2n1 w - - 0 1)

Daniel, Arthur William

The Field, 1947

(First published on Sat Feb 8 1947)

5b2/1n5B/3p4/4p3/R1PkN3/4R1r1/1K1B2r1/3Q2n1

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd2+
      • 2.Qxd2#
    • 1...Se2
      • 2.Bc1#
    • 1...d5
      • 2.c5#
  • Tries
    • 1.Ka2?
      • threat
        • 2.Qa1#
      • 1...Rxd2+
        • 2.Qxd2#
      • 1...Se2
        • 2.Bc1#
      • 1...Rxe3!
    • 1.Kc2?
      • threat
        • 2.Qa1#
      • 1...Rxd2+
        • 2.Qxd2#
      • 1...Se2
        • 2.Bc1#
      • 1...Rxe3!
    • 1.Qc2?
      • threat
        • 2.Qd3#
        • 2.Qc3#
      • 1...Rxd2
        • 2.Qxd2#
      • 1...Se2
        • 2.Qd3#
      • 1...Sc5
        • 2.Qc3#
      • 1...Rxe3!
    • 1.Qb3?
      • threat
        • 2.Qc3#
        • 2.Qd3#
        • 2.c5#
      • 1...Rxe3
        • 2.Qxe3#
        • 2.c5#
      • 1...Se2
        • 2.Qd3#
        • 2.c5#
      • 1...Sa5
        • 2.Qc3#
        • 2.Qd3#
        • 2.Qb6#
      • 1...Sc5
        • 2.Qc3#
      • 1...Rxd2+!
  • Keys
    • 1.Ka3!
      • threat
        • 2.Qa1#
      • 1...Rxe3+
        • 2.Bc3#
      • 1...d5+
        • 2.c5#
      • 1...Rxd2
        • 2.Qxd2#
      • 1...Se2
        • 2.Bc1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(b);CHECK,OGATE,P_SPINR(b),XB(C)::QAR2(A),XR(b)
    • S(a);N_PINB(C)::QAR(A)+B(C)
    • P(f);SBLOCK::R(E)+P(F)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • QAB(A)
      • Vars
        • R(b);CHECK,OGATE,P_SPINR(b),XB(C)::QAR2(A),XR(b)
        • S(a);N_PINB(C)::QAR(A)+B(C)
      • Refutation
        • R(c);XR(D)
    • Try
      • K(B);P-FLIGHT
      • Threat
        • QAB(A)
      • Vars
        • R(b);CHECK,OGATE,P_SPINR(b),XB(C)::QAR2(A),XR(b)
        • S(a);N_PINB(C)::QAR(A)+B(C)
      • Refutation
        • R(c);XR(D)
    • Try
      • Q(A);N_SPINB(C)
      • Threat
        • DUALS(2)
      • Vars
        • R(b);OGATE,P_PINQ(A),XB(C)::QAR2(A),XR(b)
        • S(a);::QAR1(A)
        • S(g);::QAB1(A)
      • Refutation
        • R(c);XR(D)
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • S(g);::QAB1(A)
      • Refutation
        • R(b);CHECK,XB(C)
  • Actual
    • K(B);N_SPINB(C),P_SPINR(D),S_FLIGHT
    • Threat
      • QAB(A)
    • Vars
      • R(c);CHECK,SBLOCK,XR(D)::QAR(A)+B(C),DCHECK
      • P(f);CHECK,SBLOCK::R(E)+P(F)
      • R(b);OGATE,P_SPINR(b),XB(C)::QAR2(A),XR(b)
      • S(a);S_CUTR(b)::QAR(A)+B(C)
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