MESON Chess Problem Database

Problem Display
PID: 2487 (6R1/8/7K/8/8/7p/5RPk/Q3B3 w - - 0 1)

Loyd, Sam

Source?, 0000

6R1/8/7K/8/8/7p/5RPk/Q3B3

#2

6 + 2

1679 American Chess Nuts 1868
5206 Sam Loyd and His Chess Problems 1913

SOLUTION

  • SOUND
  • Tries
    • 1.Ra2?
      • threat
        • 2.Bg3#
      • 1...Kg1
        • 2.Bg3#
      • 1...Kh1
        • 2.Bg3#
      • 1...hxg2!
    • 1.Rb2?
      • threat
        • 2.Bg3#
      • 1...Kg1
        • 2.Bg3#
      • 1...Kh1
        • 2.Bg3#
      • 1...hxg2!
    • 1.Rc2?
      • threat
        • 2.Bg3#
      • 1...Kg1
        • 2.Bg3#
      • 1...Kh1
        • 2.Bg3#
      • 1...hxg2!
    • 1.Rd2?
      • threat
        • 2.Bg3#
      • 1...Kg1
        • 2.Bg3#
      • 1...Kh1
        • 2.Bg3#
      • 1...hxg2!
    • 1.Re2?
      • threat
        • 2.Bg3#
      • 1...Kg1
        • 2.Bg3#
      • 1...Kh1
        • 2.Bg3#
      • 1...hxg2!
    • 1.Qe5+?
      • 1...Kh1
        • 2.Rf1#
      • 1...Kg1!
    • 1.gxh3+?
      • 1...Kh1
        • 2.Bd2#
        • 2.Bc3#
        • 2.Bb4#
        • 2.Ba5#
        • 2.Qa8#
      • 1...Kxh3!
    • 1.g3+?
      • 1...Kh1
        • 2.Bd2#
        • 2.Bc3#
        • 2.Bb4#
        • 2.Ba5#
      • 1...Kg1!
  • Keys
    • 1.Qa8!
      • 1...Kg1
        • 2.gxh3#
      • 1...Kh1
        • 2.gxh3#
      • 1...hxg2
        • 2.Qxg2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);
      • Threat
        • B(B)
      • Vars
        • K(a);S_FLIGHT::QAR(A)+B(B)
        • K(a);P-FLIGHT::QAR(A)+B(B)
      • Refutation
        • P(b);P_SPINP(b),XP(D)
    • Try
      • R(C);
      • Threat
        • B(B)
      • Vars
        • K(a);S_FLIGHT::QAR(A)+B(B)
        • K(a);P-FLIGHT::QAR(A)+B(B)
      • Refutation
        • P(b);P_SPINP(b),XP(D)
    • Try
      • R(C);
      • Threat
        • B(B)
      • Vars
        • K(a);S_FLIGHT::QAR(A)+B(B)
        • K(a);P-FLIGHT::QAR(A)+B(B)
      • Refutation
        • P(b);P_SPINP(b),XP(D)
    • Try
      • R(C);
      • Threat
        • B(B)
      • Vars
        • K(a);S_FLIGHT::QAR(A)+B(B)
        • K(a);P-FLIGHT::QAR(A)+B(B)
      • Refutation
        • P(b);P_SPINP(b),XP(D)
    • Try
      • R(C);
      • Threat
        • B(B)
      • Vars
        • K(a);S_FLIGHT::QAR(A)+B(B)
        • K(a);P-FLIGHT::QAR(A)+B(B)
      • Refutation
        • P(b);P_SPINP(b),XP(D)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::R(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(D);CHECK,XP(b)
      • Refutation
        • K(a);P-FLIGHT,XP(D)
    • Try
      • P(D);CHECK
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::R(F)+P(D),XP(b)
      • K(a);P-FLIGHT::QAB(A)+P(D),XP(b)
      • P(b);OGATE,P_SPINP(b),XP(D)::QAR1(A),XP(b)
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