MESON Chess Problem Database

Problem Display
PID: 218459 (8/3N4/2N4K/8/8/3pk3/4p1Q1/2R5 w - - 0 1)

Slater, George James

Philadelphia Times, 1882

8/3N4/2N4K/8/8/3pk3/4p1Q1/2R5

#2

5 + 3

5454 Near Snap 2020
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd2
      • 2.Qg5#
  • Tries
    • 1.Kg5?
      • 1...e1Q
        • 2.Rxe1#
      • 1...e1S
        • 2.Rxe1#
      • 1...e1B
        • 2.Rxe1#
      • 1...e1R
        • 2.Rxe1#
      • 1...d2
        • 2.Rc3#
      • 1...Kd2!
    • 1.Rc4?
      • 1...e1Q
        • 2.Re4#
      • 1...e1S
        • 2.Re4#
      • 1...e1B
        • 2.Re4#
      • 1...e1R
        • 2.Re4#
      • 1...d2
        • 2.Qg3#
      • 1...Kd2!
    • 1.Qf3+?
      • 1...Kd2
        • 2.Qf4#
      • 1...Kxf3!
    • 1.Qf2+?
      • 1...Kd2
        • 2.Qf4#
      • 1...Ke4
        • 2.Sf6#
      • 1...Kxf2!
    • 1.Qg3+?
      • 1...Kd2
        • 2.Qf4#
        • 2.Qg5#
      • 1...Ke4!
  • Keys
    • 1.Sf6!
      • 1...Kd2
        • 2.Qg5#
      • 1...Kf4
        • 2.Qf2#
      • 1...e1Q
        • 2.Sd5#
      • 1...e1S
        • 2.Sd5#
      • 1...e1B
        • 2.Sd5#
      • 1...e1R
        • 2.Sd5#
      • 1...d2
        • 2.Qg3#

This anticipates 224725(1888)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(c);P_SPINP(a),S_FLIGHT::QAB(B)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • P(a);OGATEB::R(A),XQ(a)
        • P(a);OGATEB::R(A),XS(a)
        • P(a);OGATEB::R(A),XB(a)
        • P(a);OGATEB::R(A),XR(a)
        • P(b);OGATEB,SBLOCK::R(A)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT
    • Try
      • R(A);
      • Vars
        • P(a);::R1(A)
        • P(b);SBLOCK::QAR2(B)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB(B)
      • Refutation
        • K(c);P-FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);P_SPINP(a),S_FLIGHT::QAB(B)
        • K(c);P-FLIGHT::S(E)
      • Refutation
        • K(c);S_FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • S(E);
    • Vars
      • K(c);P_SPINP(a),S_FLIGHT::QAB(B)
      • K(c);S_FLIGHT::QAR2(B)
      • P(a);::S(E)
      • P(b);SBLOCK::QAR2(B)
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