MESON Chess Problem Database

Problem Display
PID: 276342 (Q3b3/6qB/2R5/P1R1pnbp/K3k3/2Pp4/5PPB/8 w - - 0 1)

Ellerman, Arnoldo

Western Morning News, 1926

(First published on Sat Jul 3 1926)

Q3b3/6qB/2R5/P1R1pnbp/K3k3/2Pp4/5PPB/8

#2

10 + 8

15239 Valois Notebooks 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Qh6
      • 2.Rxe5#
    • 1...Qf8
      • 2.Rxe5#
    • 1...Qg6
      • 2.Rxe5#
    • 1...Qa7
      • 2.Rxe5#
    • 1...Qb7
      • 2.Rxe5#
    • 1...Qd7
      • 2.Rxe5#
    • 1...Qf7
      • 2.Rxe5#
    • 1...Qxh7
      • 2.Rxe5#
    • 1...Qg8
      • 2.Rxe5#
    • 1...Be3
      • 2.f3#
    • 1...Bxc6+
      • 2.Qxc6#
    • 1...Bg6
      • 2.Rc7#
    • 1...Bf7
      • 2.Re6#
  • Tries
    • 1.Rb5?
      • threat
        • 2.Rc4#
      • 1...Bxc6
        • 2.Qxc6#
      • 1...d2!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qb4#
      • 1...Bxc6+
        • 2.Qxc6#
      • 1...Qxb7
        • 2.Rxe5#
      • 1...Qxh7
        • 2.Rxe5#
      • 1...d2
        • 2.Qb1#
      • 1...Qg6
        • 2.Rxe5#
      • 1...Qd7
        • 2.Rxe5#
      • 1...Qf7
        • 2.Rxe5#
      • 1...Qg8
        • 2.Rxe5#
      • 1...Be3
        • 2.f3#
      • 1...Bg6
        • 2.Rc7#
      • 1...Bf7
        • 2.Re6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • Q(g);N_GUARD::R1(G),XP(c)
    • Q(g);N_GUARD,N_SPINS(d)::R1(G),XP(c)
    • Q(g);N_GUARD,P_PINP(F)::R1(G),XP(c)
    • Q(g);N_GUARD,N_SPINS(d),XB(I)::R1(G),XP(c)
    • B(e);SBLOCK::P(A)
    • B(h);CHECK,OGATE,P_SPINB(h),XR(H)::QAB(J),XB(h)
    • B(h);N_PINR(H),N_SPINS(d)::QAB(J)+R(H)
    • B(h);N_PINR(H)::QAB(J)+R(H)
  • Tries
    • Try
      • R(G);N_SPINR(H)
      • Threat
        • QAB(J)+R(H),DCHECK
      • Vars
        • B(h);OGATE,P_PINR(G),P_SPINB(h),XR(H)::QAB(J),XB(h)
      • Refutation
        • P(a);
  • Actual
    • Q(J);
    • Threat
      • QAR(J)
    • Vars
      • B(h);CHECK,OGATE,P_SPINB(h),XR(H)::QAB(J),XB(h)
      • Q(g);N_GUARD,XQ(J)::R1(G),XP(c)
      • Q(g);N_GUARD,N_SPINS(d),XB(I)::R1(G),XP(c)
      • P(a);OGATEB::QAB(J)
      • Q(g);N_GUARD,N_SPINS(d)::R1(G),XP(c)
      • Q(g);N_GUARD::R1(G),XP(c)
      • B(e);SBLOCK::P(A)
      • B(h);N_PINR(H),N_SPINS(d)::QAB(J)+R(H)
      • B(h);N_PINR(H)::QAB(J)+R(H)
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