MESON Chess Problem Database

Problem Display
PID: 140930 (8/5Rr1/8/pQPp1r2/4k1p1/5bBP/1b2NP2/4R1K1 w - - 0 1)

Szentmartoni, Laszlo

Magyar Sakkelet, 1952

8/5Rr1/8/pQPp1r2/4k1p1/5bBP/1b2NP2/4R1K1

#2

9 + 8

6490 yacpdb 2011
5454 Near Snap 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Rf4#
    • 1...Ba1
      • 2.Qb1#
    • 1...Bc1
      • 2.Qb1#
    • 1...Ba3
      • 2.Qb1#
    • 1...Bc3
      • 2.Qb1#
    • 1...Bd4
      • 2.Sc3#
      • 2.Qb1#
    • 1...Be5
      • 2.Qb1#
    • 1...Bf6
      • 2.Qb1#
    • 1...d4
      • 2.Sc3#
  • Tries
    • 1.Sc1+?
      • 1...Be2
        • 2.Qd3#
      • 1...Kd4!
    • 1.Qc4+?
      • 1...Bd4
        • 2.Sc3#
        • 2.Qc2#
        • 2.Qxd4#
      • 1...d4
        • 2.Sc3#
      • 1...dxc4!
    • 1.Qb3?
      • threat
        • 2.Qc2#
        • 2.Qe3#
      • 1...Rfxf7
        • 2.Qc2#
      • 1...Bxe2
        • 2.Qe3#
      • 1...Rf4
        • 2.Qe3#
      • 1...Rf6
        • 2.Qc2#
      • 1...Bc3
        • 2.Qc2#
        • 2.Qb1#
      • 1...Bc1
        • 2.Qc2#
        • 2.Qb1#
      • 1...Bd4
        • 2.Qc2#
        • 2.Qb1#
      • 1...Bh1
        • 2.Qe3#
      • 1...Bg2
        • 2.Qe3#
      • 1...d4!
  • Keys
    • 1.Be5!
      • threat
        • 2.Sc3#
        • 2.Sg3#
      • 1...gxh3+
        • 2.Sg3#
      • 1...Kxe5
        • 2.Qe8#
      • 1...Rxe5
        • 2.Rf4#
      • 1...Rfxf7
        • 2.Sg3#
      • 1...Bxe5
        • 2.Qb1#
      • 1...Bxe2
        • 2.Qxe2#
      • 1...Rf6
        • 2.Sg3#
      • 1...Bh1
        • 2.Sd4#
      • 1...Bg2
        • 2.Sd4#
      • 1...d4
        • 2.Sc3#
      • 1...Bc3
        • 2.Sxc3#
        • 2.Sg3#
      • 1...g3
        • 2.Sc3#
        • 2.Sxg3#

Anticipated by 44149(1911)

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 5
  • Sets
    • R(g);OGATE,SBLOCK::R1(I)
    • B(a);OGATE::QAB(G)
    • P(f);SBLOCK::R(A)+S(C),DCHECK
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • B(b);P_SPINB(b)::QAB1(G)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • P(f);P_SPINP(f)::R(A)+S(C),DCHECK
      • Refutation
        • P(f);XQ(G)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • R(g);XR(I)::QAB(G)
        • B(b);P_SPINB(b),XS(C)::QAR1(G)
        • R(g);::QAR1(G)
        • R(g);::QAB(G)
        • B(b);::QAR1(G)
      • Refutation
        • P(f);
  • Actual
    • B(E);
    • Threat
      • DUALS(2)
    • Vars
      • P(d);CHECK,XP(F)::R(A)+S(C),DCHECK
      • K(c);OGATEB,P-FLIGHT,XB(E)::QAR(G)
      • R(g);OGATE,SBLOCK,XB(E)::R1(I)
      • R(g);XR(I)::R(A)+S(C),DCHECK
      • B(a);OGATE,SBLOCK,XB(E)::QAB(G)
      • B(b);OGATE,P_SPINB(b),XS(C)::QAR2(G),XB(b)
      • R(g);::R(A)+S(C),DCHECK
      • B(b);N_GUARD::R(A)+S(C)
      • P(f);::R(A)+S(C),DCHECK
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