MESON Chess Problem Database

Problem Display
PID: 200231 (8/8/3p4/1p1r1P2/2Nkp1K1/2R5/1Q6/8 w - - 0 1)

Meiners, Willem Barend Hendrik

Op de Hoogte, 1912

8/8/3p4/1p1r1P2/2Nkp1K1/2R5/1Q6/8

#2

5 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Qd2#
  • Tries
    • 1.Rc1+?
      • 1...Kd3
        • 2.Qd2#
      • 1...Kc5!
    • 1.Rc2+?
      • 1...Kd3
        • 2.Qc3#
      • 1...Kc5!
    • 1.Ra3+?
      • 1...Kxc4
        • 2.Qc3#
      • 1...Kc5!
    • 1.Rb3+?
      • 1...Kxc4
        • 2.Qc3#
      • 1...Kc5!
    • 1.Re3+?
      • 1...Kxc4
        • 2.Qc3#
      • 1...Kc5!
    • 1.Rf3+?
      • 1...Kxc4
        • 2.Qc3#
      • 1...Kc5!
    • 1.Rg3+?
      • 1...Kxc4
        • 2.Qc3#
      • 1...Kc5!
    • 1.Rh3+?
      • 1...Kxc4
        • 2.Qc3#
      • 1...Kc5!
    • 1.Qf2+?
      • 1...e3
        • 2.Qxe3#
      • 1...Kxc3!
  • Keys
    • 1.Se5!
      • threat
        • 2.Sc6#
      • 1...Kxe5
        • 2.Rc5#
      • 1...Rxe5
        • 2.Qd2#
      • 1...dxe5
        • 2.Qd2#
        • 2.Qb4#
      • 1...Rc5
        • 2.Rd3#
      • 1...e3
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(d);SBLOCK::QAR2(A)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(C)::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(C)::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(C)::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(C)::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(C)::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(C)::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • P(b);P_SPINP(b)::QAB1(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(a);S_FLIGHT,XS(C)::QAB(A)+R(B)
      • R(d);SBLOCK,XS(C)::QAR2(A)
      • R(d);SBLOCK::QAB(A)+R(B),DCHECK
      • P(b);SBLOCK::QAB(A)+R(B),DCHECK
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