MESON Chess Problem Database

Problem Display
PID: 203444 (2b5/4N2Q/4pB2/1P2P3/1Prkp3/6pK/BPpnR3/2N5 w - - 0 1)

Ortmans, FH Joseph

Noord-Hollandsch Dagblad, 1924

2b5/4N2Q/4pB2/1P2P3/1Prkp3/6pK/BPpnR3/2N5

#2

11 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rc6
      • 2.Sxc6#
    • 1...Sb1
      • 2.Rxe4#
      • 2.Qxe4#
    • 1...Sf1
      • 2.Rxe4#
      • 2.Qxe4#
    • 1...Sb3
      • 2.Rxe4#
      • 2.Qxe4#
    • 1...Sf3
      • 2.Rxe4#
      • 2.Qxe4#
    • 1...e3
      • 2.Qd3#
  • Tries
    • 1.Sb3+?
      • 1...Sxb3
        • 2.Qxe4#
      • 1...Kd3!
    • 1.Sf5+?
      • 1...Kd5
        • 2.Rxd2#
      • 1...exf5!
    • 1.Sc6+?
      • 1...Kd5
        • 2.Rxd2#
      • 1...Rxc6!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Rxd2#
      • 1...exd5+
        • 2.e6#
      • 1...Kxd5
        • 2.Rxd2#
      • 1...Rxb4
        • 2.Qa7#
      • 1...Rc3
        • 2.bxc3#
      • 1...Sb1
        • 2.Qxe4#
      • 1...Sf1
        • 2.Qxe4#
      • 1...Sb3
        • 2.Qxe4#
      • 1...Sf3
        • 2.Qxe4#
      • 1...e3
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • R(d);N_GUARD::S(J),XR(d)
    • P(f);OGATE::QAR1(K)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • S(b);XS(A)::QAR1(K),XP(f)
      • Refutation
        • K(e);P-FLIGHT,P_SPINP(f)
    • Try
      • S(J);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINR(d)::R(D),XS(b)
      • Refutation
        • P(g);XS(J)
    • Try
      • S(J);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINR(d)::R(D),XS(b)
      • Refutation
        • R(d);XS(J)
  • Actual
    • S(J);
    • Threat
      • R(D),XS(b)
    • Vars
      • P(g);CHECK,OGATE,SBLOCK,XS(J)::B(I)+P(H)
      • K(e);P-FLIGHT,P_SPINR(d),XS(J)::R(D),XS(b)
      • R(d);N_GUARD,XP(F)::QAB(K)
      • R(d);OGATE::P(C),XR(d)
      • S(b);N_GUARD::QAR1(K),XP(f)
      • P(f);OGATE::QAR1(K)
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