MESON Chess Problem Database

Problem Display
PID: 181857 (5B2/8/5p2/2R2Kp1/3kP3/8/nR1NP1p1/Qn6 w - - 0 1)

Schmidt, Janos

Magyar Sakklap, 1905

5B2/8/5p2/2R2Kp1/3kP3/8/nR1NP1p1/Qn6

#2

8 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sxd2
      • 2.Qg1#
    • 1...Sa3
      • 2.Qg1#
    • 1...Sbc3
      • 2.Qg1#
  • Tries
    • 1.Rxb1+?
      • 1...Sc3
        • 2.Qxc3#
      • 1...Ke3!
    • 1.Rxa2+?
      • 1...Sc3
        • 2.Qxc3#
        • 2.Qg1#
      • 1...Ke3!
    • 1.Rb3+?
      • 1...Sbc3
        • 2.Qg1#
      • 1...Sac3!
    • 1.Rcc2?
      • threat
        • 2.Bc5#
      • 1...Sac3
        • 2.Qa7#
      • 1...Sbc3
        • 2.Qg1#
      • 1...Ke3!
    • 1.Rd5+?
      • 1...Kc3
        • 2.Rxa2#
        • 2.Rd3#
      • 1...Ke3!
  • Keys
    • 1.Rc3!
      • threat
        • 2.Rd3#
      • 1...Kxc3
        • 2.Rxa2#
      • 1...Sxd2
        • 2.Rxd2#
      • 1...Sbxc3
        • 2.Qg1#
      • 1...Saxc3
        • 2.Qa7#
      • 1...Sc1
        • 2.Rb4#
      • 1...Sb4
        • 2.Rxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • S(a);OGATE,XS(C)::QAB(A)
    • S(a);OGATE::QAB(A)
  • Tries
    • Try
      • R(B);CHECK,XS(a)
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB1(A),XS(b)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • R(B);CHECK,XS(b)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • S(a);OGATE,P_SPINS(a)::QAB(A)
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • R(F);
      • Threat
        • B(H)
      • Vars
        • S(b);OGATE::QAB(A)
        • S(a);OGATE::QAB(A)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • R(F);CHECK
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • R(F);
    • Threat
      • R1(F)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XR(F)::QAB(A)+R(B),XS(b)
      • S(a);OGATE,XS(C)::R(B),XS(a)
      • S(a);OGATE,SBLOCK,XR(F)::QAB(A)
      • S(b);OGATE,SBLOCK,XR(F)::QAB(A)
      • S(b);N_GUARD::R(B)
      • S(b);N_GUARD::R(B),XS(b)
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