MESON Chess Problem Database

Problem Display
PID: 250086 (4R3/P1PQ4/3p2pK/2pk3N/rb2br2/1RppP3/B1N2qp1/8 w - - 0 1)

Hume, George

Chess Amateur (The), 1927

4R3/P1PQ4/3p2pK/2pk3N/rb2br2/1RppP3/B1N2qp1/8

#2

10 + 12

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Ra3#
      • 2.Rxb4#
  • Tries
    • 1.Sxf4+?
      • 1...Kc4
        • 2.Ra3#
        • 2.Rxb4#
        • 2.Rxe4#
      • 1...Qxf4+!
    • 1.Sf6+?
      • 1...Kc4
        • 2.Ra3#
        • 2.Rxb4#
      • 1...Rxf6!
    • 1.Rxb4+?
      • 1...c4
        • 2.Rb5#
        • 2.Qb5#
      • 1...Rxa2!
    • 1.Re5+?
      • 1...Kc4
        • 2.Ra3#
        • 2.Rxb4#
      • 1...Kxe5!
    • 1.Qc6+?
      • 1...Kc4
        • 2.Ra3#
        • 2.Rxb4#
      • 1...Kxc6!
    • 1.Qxd6+?
      • 1...Kc4
        • 2.Rxb4#
      • 1...Kxd6!
    • 1.a8Q+?
      • 1...Kc4
        • 2.Ra3#
        • 2.Rxb4#
      • 1...Rxa8!
    • 1.a8B+?
      • 1...Kc4
        • 2.Ra3#
        • 2.Rxb4#
      • 1...Rxa8!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Ra3#
      • 1...Qxc2
        • 2.Sxf4#
      • 1...Rxa2
        • 2.Sxb4#
      • 1...Ra3
        • 2.Sxb4#
        • 2.Rxa3#
      • 1...Ba3
        • 2.Rb4#
      • 1...Ba5
        • 2.a8Q#
        • 2.a8B#
      • 1...Bf3
        • 2.Sxf4#
      • 1...Bf5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);CHECK,XR(h)
      • Refutation
        • Q(a);CHECK,XS(E)
    • Try
      • S(E);CHECK
      • Refutation
        • R(h);XS(E)
    • Try
      • R(C);CHECK,XB(f)
      • Refutation
        • R(e);XB(A)
    • Try
      • R(J);CHECK
      • Refutation
        • K(j);N_SPINP(k),P-FLIGHT,XR(J)
    • Try
      • Q(I);CHECK,N_PINP(k)
      • Refutation
        • K(j);S_FLIGHT,XQ(I)
    • Try
      • Q(I);CHECK,XP(k)
      • Vars
        • K(j);N_GUARD,S_FLIGHT::B(A)+R(C),DCHECK,XB(f)
      • Refutation
        • K(j);P-FLIGHT,XQ(I)
    • Try
      • P(G);CHECK
      • Refutation
        • R(e);XQ(G)
    • Try
      • P(G);CHECK
      • Refutation
        • R(e);XB(G)
  • Actual
    • Q(I);N_PINP(k),P_PINP(i)
    • Threat
      • B(A)+R(C)
    • Vars
      • Q(a);N_GUARD,XS(B)::S(E),XR(h)
      • R(e);N_GUARD,XB(A)::S(B),XB(f)
      • B(f);S_CUTR(e)::B(A)+R(C)
      • B(f);S_CUTR(e)::P=Q
      • B(g);S_CUTQ(a)::S(E),XR(h)
      • B(g);S_CUTR(h)::S(E)
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