MESON Chess Problem Database

Problem Display
PID: 262089 (1B6/2q1r3/1p3p2/b5p1/1p4pr/2Q1N1kp/7p/R3KR1B w Q - 0 1)

Lipton, Michael

Russ, Colin Albert Harry

British Chess Magazine, 1955

1B6/2q1r3/1p3p2/b5p1/1p4pr/2Q1N1kp/7p/R3KR1B

#2

7 + 12

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe3+
      • 2.Qxe3#
    • 1...Rd7
      • 2.Sf5#
    • 1...Rf7
      • 2.Sf5#
    • 1...Rg7
      • 2.Sf5#
    • 1...Rh7
      • 2.Sf5#
  • Tries
    • 1.Bxc7+?
      • 1...Rxc7
        • 2.Sf5#
        • 2.Qxc7#
      • 1...Re5!
    • 1.Qd2?
      • threat
        • 2.Qf2#
      • 1...Rxe3+
        • 2.Qxe3#
      • 1...b3!
    • 1.Qxc7+?
      • 1...Rxc7
        • 2.Sf5#
        • 2.Bxc7#
      • 1...Re5!
  • Keys
    • 1.0-0-0!
      • threat
        • 2.Sf5#
      • 1...Rxe3
        • 2.Bxc7#
      • 1...Qf4
        • 2.Qe1#
      • 1...f5
        • 2.Sxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(l);CHECK,OGATE,P_SPINR(l),XS(F)::QAR2(E),XR(l)
    • R(l);N_PINS(F)::QAR(E)+S(F),DCHECK
  • Tries
    • Try
      • B(G);CHECK,XQ(k)
      • Refutation
        • R(l);P_SPINR(l)
    • Try
      • Q(E);
      • Threat
        • QAB1(E)
      • Vars
        • R(l);CHECK,OGATE,XS(F)::QAR2(E),XR(l)
      • Refutation
        • P(d);P_PINQ(E)
    • Try
      • Q(E);CHECK,XQ(k)
      • Refutation
        • R(l);P_SPINR(l)
  • Actual
    • K(B);0-0-0,N_SPINS(F),P_SPINQ(E)
    • Threat
      • QAR(E)+S(F),DCHECK
    • Vars
      • R(l);N_GUARD,P_SPINR(l),XS(F)::B(G),XQ(k)
      • Q(k);N_PINQ(E),P_PINS(F)::QAB(E)
      • P(j);::QAR(E)+S(F),DCHECK,XP(j)
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