MESON Chess Problem Database

Problem Display
PID: 9468 (8/1pR5/4kp2/r3B3/2P3PK/8/8/4Q3 w - - 0 1)

Gold, Samuel

American Chess Bulletin, 1904

8/1pR5/4kp2/r3B3/2P3PK/8/8/4Q3

#2

6 + 4

3360 Simple Two-move Themes 1924
5454 Near Snap 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Ra4
      • 2.Bh2#
      • 2.Bg3#
      • 2.Bf4#
    • 1...Ra6
      • 2.Bh2#
      • 2.Bg3#
      • 2.Bf4#
    • 1...Ra7
      • 2.Bh2#
      • 2.Bg3#
      • 2.Bf4#
    • 1...Ra8
      • 2.Bh2#
      • 2.Bg3#
      • 2.Bf4#
    • 1...b5
      • 2.Bh2#
      • 2.Bg3#
      • 2.Bf4#
  • Tries
    • 1.Ba1+?
      • 1...Kd6
        • 2.Qe7#
      • 1...Re5!
    • 1.Bb2+?
      • 1...Kd6
        • 2.Qe7#
      • 1...Re5!
    • 1.Bc3+?
      • 1...Kd6
        • 2.Qe7#
      • 1...Re5!
    • 1.Bd4+?
      • 1...Kd6
        • 2.Qe7#
      • 1...Re5!
    • 1.Bd6+?
      • 1...Kxd6
        • 2.Qe7#
      • 1...Re5!
    • 1.Bxf6+?
      • 1...Kd6
        • 2.Qe7#
      • 1...Re5
        • 2.Qxe5#
      • 1...Kxf6!
    • 1.Qf2?
      • threat
        • 2.Qf5#
        • 2.Qxf6#
      • 1...Rxe5
        • 2.Qb6#
      • 1...fxe5
        • 2.Qb6#
      • 1...f5
        • 2.Qxf5#
      • 1...Kxe5!
    • 1.Qxa5?
      • threat
        • 2.Qd5#
      • 1...fxe5
        • 2.Qb6#
      • 1...b5!
    • 1.Qb1?
      • threat
        • 2.Qf5#
      • 1...Rxe5
        • 2.Qb6#
      • 1...fxe5
        • 2.Qg6#
        • 2.Qb6#
      • 1...f5
        • 2.Qxf5#
      • 1...Kxe5!
    • 1.Qe4?
      • threat
        • 2.Qf5#
      • 1...fxe5
        • 2.Qg6#
      • 1...f5
        • 2.Qxf5#
        • 2.gxf5#
      • 1...Rxe5!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Qd6#
      • 1...Kxe5
        • 2.Re7#
      • 1...Rxe5
        • 2.Qd7#
      • 1...fxe5
        • 2.Qh6#
      • 1...Rd5
        • 2.Qxd5#
      • 1...Ra6
        • 2.Qd5#

Anticipated by 48944(1897)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(E);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAB1(A)
      • Refutation
        • R(a);P_SPINR(a)
    • Try
      • B(E);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAB1(A)
      • Refutation
        • R(a);P_SPINR(a)
    • Try
      • B(E);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAB1(A)
      • Refutation
        • R(a);P_SPINR(a)
    • Try
      • B(E);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAB1(A)
      • Refutation
        • R(a);P_SPINR(a)
    • Try
      • B(E);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT,XB(E)::QAB1(A)
      • Refutation
        • R(a);P_SPINR(a)
    • Try
      • B(E);CHECK,XP(c)
      • Vars
        • K(b);OGATE,P-FLIGHT::QAB1(A)
        • R(a);N_GUARD,P_SPINR(a)::QAR1(A),XR(a)
      • Refutation
        • K(b);P-FLIGHT,XB(E)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);SBLOCK,XB(E)::QAR(A)
        • P(c);SBLOCK,XB(E)::QAR(A)
        • P(c);::QAB1(A),XP(c)
      • Refutation
        • K(b);P-FLIGHT,XB(E)
    • Try
      • Q(A);XR(a)
      • Threat
        • QAB1(A)
      • Vars
        • P(c);SBLOCK,XB(E)::QAR(A)
      • Refutation
        • P(d);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • R(a);SBLOCK,XB(E)::QAR(A)
        • P(c);::QAB1(A),XP(c)
      • Refutation
        • K(b);P-FLIGHT,XB(E)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • P(c);OGATEB,P_SPINP(c),SBLOCK,XB(E)::QAR2(A)
      • Refutation
        • R(a);P_SPINR(a),XB(E)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(b);P-FLIGHT,XB(E)::R(F)
      • R(a);SBLOCK,XB(E)::QAB1(A)
      • P(c);OGATEB,SBLOCK,XB(E)::QAR(A)
      • R(a);N_GUARD::QAB1(A),XR(a)
      • R(a);N_GUARD::QAB1(A)
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