MESON Chess Problem Database

Problem Display
PID: 108573 (1n1b2n1/5Q2/r2RKp2/1p3Rp1/1Bk3b1/1NPpp3/3p4/3B4 w - - 0 1)

Kapros, Jorge Marcelo

Trebejos, 1988

1n1b2n1/5Q2/r2RKp2/1p3Rp1/1Bk3b1/1NPpp3/3p4/3B4

#2

8 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Rd4#
    • 1...Ra2
      • 2.Rd4#
    • 1...Ra3
      • 2.Rd4#
    • 1...Ra4
      • 2.Rd4#
    • 1...Ra5
      • 2.Rd4#
    • 1...Rb6
      • 2.Sa5#
    • 1...Rxd6+
      • 2.Kxd6#
    • 1...Ra7
      • 2.Rd4#
    • 1...Ra8
      • 2.Rd4#
    • 1...Be2
      • 2.Rc5#
    • 1...Bf3
      • 2.Rc5#
    • 1...Bxf5+
      • 2.Kxf5#
    • 1...Bh5
      • 2.Rc5#
    • 1...Sc6
      • 2.Kd7#
    • 1...Sd7
      • 2.Kxd7#
    • 1...e2
      • 2.Sxd2#
  • Tries
    • 1.Sd4?
      • threat
        • 2.Bb3#
      • 1...Rxd6+
        • 2.Kxd6#
      • 1...Bxf5+
        • 2.Kxf5#
      • 1...Bxd1
        • 2.Rc5#
      • 1...Ra3!
    • 1.Sa5+?
      • 1...Rxa5
        • 2.Rd4#
      • 1...Bxa5!
    • 1.Sc5?
      • threat
        • 2.Bb3#
      • 1...Rxd6+
        • 2.Kxd6#
      • 1...Bxf5+
        • 2.Kxf5#
      • 1...Ra3
        • 2.Rd4#
      • 1...Bxd1!
    • 1.Rc6+?
      • 1...Sxc6
        • 2.Kd6#
        • 2.Kd7#
      • 1...Rxc6+!
    • 1.Qc7+?
      • 1...Rc6
        • 2.Sa5#
      • 1...Sc6
        • 2.Rd4#
      • 1...Bxc7!
  • Keys
    • 1.Sa1!
      • threat
        • 2.Bb3#
      • 1...Rxd6+
        • 2.Kxd6#
      • 1...Bxf5+
        • 2.Kxf5#
      • 1...Rxa1
        • 2.Rd4#
      • 1...Bxd1
        • 2.Rc5#
      • 1...Ra3
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 12
  • Sets
    • R(h);OGATE::R1(F)
    • R(h);N_GUARD,S_CUTB(k)::S(B)
    • R(h);CHECK,XR(F)::QAB(H)+K(G),XR(h)
    • B(e);N_PINR(E),P_PINR(F)::R1(E)
    • B(e);CHECK,P_PINR(F),XR(E)::QAB(H)+K(G),XB(e)
    • S(j);::QAB(H)+K(G)
    • S(j);::QAB(H)+K(G),XS(j)
    • P(c);N_GUARD::S(B),XP(a)
  • Tries
    • Try
      • S(B);
      • Threat
        • B(A)
      • Vars
        • R(h);CHECK,XR(F)::QAB(H)+K(G),XR(h)
        • B(e);CHECK,P_PINR(F),XR(E)::QAB(H)+K(G),XB(e)
        • B(e);N_PINR(E),P_PINR(F),XB(A)::R1(E)
      • Refutation
        • R(h);
    • Try
      • S(B);CHECK
      • Vars
        • R(h);OGATE,XS(B)::R1(F)
      • Refutation
        • B(k);XS(B)
    • Try
      • S(B);
      • Threat
        • B(A)
      • Vars
        • R(h);CHECK,XR(F)::QAB(H)+K(G),XR(h)
        • B(e);CHECK,P_PINR(F),XR(E)::QAB(H)+K(G),XB(e)
        • R(h);OGATE::R1(F)
      • Refutation
        • B(e);N_PINR(E),P_PINR(F),XB(A)
    • Try
      • R(F);CHECK
      • Refutation
        • R(h);CHECK,XR(F)
    • Try
      • Q(H);CHECK
      • Vars
        • R(h);P_SPINR(h)::S(B)
        • S(j);OGATE,P_SPINS(j)::R1(F)
      • Refutation
        • B(k);XQ(H)
  • Actual
    • S(B);
    • Threat
      • B(A)
    • Vars
      • R(h);CHECK,XR(F)::QAB(H)+K(G),XR(h)
      • B(e);CHECK,P_PINR(F),XR(E)::QAB(H)+K(G),XB(e)
      • R(h);OGATE,XS(B)::R1(F)
      • B(e);N_PINR(E),P_PINR(F),XB(A)::R1(E)
      • R(h);OGATE::R1(F)
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