MESON Chess Problem Database

Problem Display
PID: 64142 (R5B1/8/3NNp2/1Ppk1P2/7K/4R1B1/1Pr1p3/Q2r4 w - - 0 1)

Bettmann, Edgar

Bettmann, Henry Wald

Bettmann, Jacob

Source?, 1883

R5B1/8/3NNp2/1Ppk1P2/7K/4R1B1/1Pr1p3/Q2r4

#2

11 + 6

16 Chess Amateur (The) 1910

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa1
      • 2.Rd3#
    • 1...Rb1
      • 2.Rd3#
    • 1...Rdc1
      • 2.Rd3#
    • 1...Re1
      • 2.Rd3#
    • 1...Rf1
      • 2.Rd3#
    • 1...Rg1
      • 2.Rd3#
    • 1...Rh1+
      • 2.Qxh1#
    • 1...Rdd2
      • 2.Qh1#
    • 1...Rd3
      • 2.Rxd3#
      • 2.Qh1#
  • Tries
    • 1.Sf4+?
      • 1...Kd4
        • 2.Re4#
      • 1...Kxd6!
    • 1.Qa2+?
      • 1...Rc4+
        • 2.Qxc4#
      • 1...c4!
  • Keys
    • 1.Rd8!
      • threat
        • 2.Qa8#
      • 1...Rh1+
        • 2.Qxh1#
      • 1...Rd4+
        • 2.Sf4#
      • 1...Rc4+
        • 2.Se4#
      • 1...Rxa1
        • 2.Rd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • R(a);N_GUARD,XQ(A)::R(C)
    • R(a);N_GUARD::R(C)
    • R(a);CHECK,OGATE::QAB(A),XR(a)
    • R(a);OGATE::QAB(A)
  • Tries
    • Try
      • S(I);CHECK
      • Vars
        • K(e);P-FLIGHT::R1(C)
      • Refutation
        • K(e);P-FLIGHT,XS(H)
    • Try
      • Q(A);CHECK
      • Vars
        • R(b);CHECK,N_GUARD,P_SPINR(b)::QAB1(A),XR(b)
      • Refutation
        • P(d);P_SPINP(d)
  • Actual
    • R(J);
    • Threat
      • QAB(A)
    • Vars
      • R(a);CHECK,OGATE::QAB(A),XR(a)
      • R(a);CHECK,SBLOCK::B(K)+S(I),DCHECK
      • R(b);CHECK,SBLOCK::R(J)+S(H)
      • R(a);N_GUARD,XQ(A)::R(C)
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