MESON Chess Problem Database

Problem Display
PID: 41807 (3Q4/B6B/2PN4/R1PrP3/P2kp2K/8/2R5/4N3 w - - 0 1)

Weiss, Berthold

De Problemist, 1929

3Q4/B6B/2PN4/R1PrP3/P2kp2K/8/2R5/4N3

#2

12 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc5
      • 2.Sc4#
    • 1...Rxe5
      • 2.Sf5#
    • 1...Rxd6
      • 2.cxd6#
    • 1...e3
      • 2.Sf3#
  • Tries
    • 1.Kg3?
      • 1...Ke3
        • 2.Sf5#
      • 1...Rxc5
        • 2.Sc4#
      • 1...Rxe5
        • 2.Sf5#
      • 1...Rxd6
        • 2.cxd6#
      • 1...e3
        • 2.Sf3#
      • 1...Kxe5!
    • 1.Kg4?
      • 1...Ke3
        • 2.Sf5#
      • 1...Rxc5
        • 2.Sc4#
      • 1...Rxe5
        • 2.Sf5#
      • 1...Rxd6
        • 2.cxd6#
      • 1...e3
        • 2.Sf3#
      • 1...Kxe5!
    • 1.Sc4?
      • 1...Rd6
        • 2.Qxd6#
        • 2.cxd6#
      • 1...Rd7
        • 2.Qxd7#
      • 1...e3
        • 2.Sf3#
      • 1...Rxd8!
    • 1.Sb5+?
      • 1...Ke3
        • 2.Qg5#
      • 1...Kxe5!
    • 1.Rc4+?
      • 1...Kxe5
        • 2.Rxe4#
      • 1...Ke3!
    • 1.Qg5?
      • threat
        • 2.Sb5#
        • 2.Rc4#
      • 1...Rxe5
        • 2.Qd2#
      • 1...Rxd6
        • 2.cxd6#
      • 1...Rxc5!
  • Keys
    • 1.Kg5!
      • 1...Rxe5+
        • 2.Sf5#
      • 1...Ke3
        • 2.Sf5#
      • 1...Kxe5
        • 2.Qf6#
      • 1...Rxc5
        • 2.Sc4#
      • 1...Rxd6
        • 2.cxd6#
      • 1...e3
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(c);P_SPINR(c),XP(F)::QAR(L)+S(I)
    • R(c);SBLOCK,XP(G)::QAR(L)+S(I),DCHECK
    • R(c);OGATE,P_SPINR(c),XS(I)::B(J)+P(F),XR(c)
    • P(b);N_GUARD,SBLOCK::S(A)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::S(I)
        • R(c);P_SPINR(c),XP(F)::QAR(L)+S(I)
        • R(c);SBLOCK,XP(G)::QAR(L)+S(I),DCHECK
        • R(c);OGATE,P_SPINR(c),XS(I)::B(J)+P(F),XR(c)
        • P(b);N_GUARD,SBLOCK::S(A)
      • Refutation
        • K(a);S_FLIGHT,XP(G)
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::S(I)
        • R(c);P_SPINR(c),XP(F)::QAR(L)+S(I)
        • R(c);SBLOCK,XP(G)::QAR(L)+S(I),DCHECK
        • R(c);OGATE,P_SPINR(c),XS(I)::B(J)+P(F),XR(c)
        • P(b);N_GUARD,SBLOCK::S(A)
      • Refutation
        • K(a);S_FLIGHT,XP(G)
    • Try
      • S(I);P_PINR(c)
      • Vars
        • R(c);OGATEB::QAR(L),XR(c)
        • P(b);N_GUARD::S(A)
      • Refutation
        • R(c);N_SPINR(c),XQ(L)
    • Try
      • S(I);CHECK,P_PINR(c)
      • Vars
        • K(a);N_SPINR(c),S_FLIGHT::QAB(L)
      • Refutation
        • K(a);N_SPINR(c),S_FLIGHT,XP(G)
    • Try
      • R(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT,XP(G)::R1(B),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(L);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);SBLOCK,XP(G)::QAR2(L)
        • R(c);OGATE,XS(I)::B(J)+P(F),XR(c)
      • Refutation
        • R(c);P_SPINR(c),XP(F)
  • Actual
    • K(D);P_SPINP(G),S_FLIGHT
    • Vars
      • R(c);CHECK,SBLOCK,XP(G)::QAR(L)+S(I),DCHECK
      • K(a);S_FLIGHT::S(I)
      • K(a);OGATEB,S_FLIGHT,XP(G)::QAB1(L)
      • R(c);P_SPINR(c),XP(F)::QAR(L)+S(I)
      • R(c);N_PINP(G),OGATE,P_SPINR(c),XS(I)::B(J)+P(F),XR(c)
      • P(b);N_GUARD,SBLOCK::S(A)
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