MESON Chess Problem Database

Problem Display
PID: 92111 (1K1N4/3p2Bn/3p4/R1bk4/2pNp3/3r4/3Q4/3n4 w - - 0 1)

Wielgos, Oskar

Deutsche Schachblatter, 1981

1K1N4/3p2Bn/3p4/R1bk4/2pNp3/3r4/3Q4/3n4

#2

6 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra3
      • 2.Sb3#
    • 1...Rb3+
      • 2.Sxb3#
    • 1...Rf3
      • 2.Sxf3#
    • 1...Rg3
      • 2.Sf3#
    • 1...Rh3
      • 2.Sf3#
    • 1...Rxd4
      • 2.Qxd4#
    • 1...Sg5
      • 2.Qxg5#
    • 1...Sf8
      • 2.Qg5#
    • 1...c3
      • 2.Qa2#
    • 1...e3
      • 2.Qg2#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Sb4#
      • 1...Sf6
        • 2.Qg5#
      • 1...e3
        • 2.Qg2#
      • 1...c3!
    • 1.Se2?
      • threat
        • 2.Sf4#
      • 1...Sf6
        • 2.Qg5#
      • 1...c3
        • 2.Qa2#
      • 1...e3!
    • 1.Sf5?
      • threat
        • 2.Se7#
      • 1...c3
        • 2.Qa2#
      • 1...e3
        • 2.Qg2#
      • 1...Sf6!
    • 1.S4c6?
      • threat
        • 2.Sb4#
        • 2.Se7#
      • 1...c3
        • 2.Qa2#
      • 1...e3
        • 2.Qg2#
      • 1...Sf6
        • 2.Qg5#
      • 1...dxc6!
    • 1.S4e6?
      • threat
        • 2.Sf4#
        • 2.Sc7#
      • 1...Sf6
        • 2.Qg5#
      • 1...c3
        • 2.Qa2#
      • 1...e3
        • 2.Qg2#
      • 1...dxe6!
    • 1.Rxc5+?
      • 1...Kxc5
        • 2.Qa5#
      • 1...dxc5!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sc7#
      • 1...Ba7+
        • 2.Sxa7#
      • 1...Sf6
        • 2.Qg5#
      • 1...c3
        • 2.Qa2#
      • 1...e3
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • R(b);::QAR(A)+S(B)
    • R(b);CHECK::QAR(A)+S(B),XR(b)
    • R(b);::QAR(A)+S(B),XR(b)
    • R(b);OGATE,P_SPINR(b),XS(B)::QAR1(A),XR(b)
    • S(i);N_GUARD::QAR(A),XS(i)
    • S(i);N_GUARD::QAR(A)
    • P(c);OGATEB::QAB(A)
    • P(d);OGATEB::QAB(A)
  • Tries
    • Try
      • S(B);P_PINR(b)
      • Threat
        • S(B)
      • Vars
        • S(i);N_GUARD::QAR(A)
        • P(d);OGATEB::QAB(A)
      • Refutation
        • P(c);
    • Try
      • S(B);P_PINR(b)
      • Threat
        • S(B)
      • Vars
        • S(i);N_GUARD::QAR(A)
        • P(c);OGATEB::QAB(A)
      • Refutation
        • P(d);
    • Try
      • S(B);P_PINR(b)
      • Threat
        • S(B)
      • Vars
        • P(c);OGATEB::QAB(A)
        • P(d);OGATEB::QAB(A)
      • Refutation
        • S(i);
    • Try
      • S(B);P_PINR(b)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);OGATEB::QAB(A)
        • P(d);OGATEB::QAB(A)
        • S(i);N_GUARD::QAR(A)
      • Refutation
        • P(h);XS(B)
    • Try
      • S(B);P_PINR(b)
      • Threat
        • DUALS(2)
      • Vars
        • S(i);N_GUARD::QAR(A)
        • P(c);OGATEB::QAB(A)
        • P(d);OGATEB::QAB(A)
      • Refutation
        • P(h);XS(B)
    • Try
      • R(C);CHECK,XB(e)
      • Vars
        • K(f);P-FLIGHT,XR(C)::QAR2(A)
      • Refutation
        • P(g);XR(C)
  • Actual
    • S(B);N_PINB(e),P_PINR(b)
    • Threat
      • S(B)
    • Vars
      • B(e);CHECK::R(C)+S(B),XB(e)
      • S(i);N_GUARD::QAR(A)
      • P(c);OGATEB::QAB(A)
      • P(d);OGATEB::QAB(A)
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